Your First 90 Days as a NICU Nurse: What I Wish Someone Had Told Me

Starting in the NICU can feel overwhelming, but it doesn't have to stay that way.

I still remember my first days in the NICU.

I walked onto the unit excited, nervous, and determined to do a good job. I had spent years in nursing school preparing to become a nurse, yet I still felt completely unprepared.

Every monitor seemed to alarm for a different reason. The ventilators looked intimidating. Everyone else seemed to know exactly what they were doing, moving from bedside to bedside like it was nothing, while I was still trying to remember which line was the UAC and which was the UVC.

Meanwhile, I was wondering if I had made a mistake choosing one of the most specialized areas in nursing.

Looking back now, after more than 16 years in the NICU, becoming a Clinical Nurse Specialist, teaching thousands of NICU nurses, and mentoring new graduates, I realize something important:

Everything I was feeling was normal.

Nobody tells you that in orientation. So I'm telling you now. If you're just starting your NICU journey, here are the things I wish someone had told me.

1. You are not expected to know everything.

This sounds obvious. But it rarely feels that way.

New NICU nurses often believe they need to have an answer for every question or understand every disease process immediately. You don't.

Your orientation is designed to make you competent in neonatal care. You will not be an expert when it’s done. You keep learning everyday throughout your career.

Some days you'll leave work feeling like you learned everything. Other days you'll drive home convinced you know nothing… Replaying every interaction, wondering if you missed something. Both are an important part of becoming a NICU nurse.

2. Learn the "why," not just the task.

Anyone can memorize steps. The best NICU nurses understand physiology.

Instead of asking:

"What do I do?"

Start asking:

• Why are we increasing the Rate instead of the PIP?

• Why did we start dopamine instead of epinephrine?

• Why does this baby need phototherapy at this bili level and not another?

• Why are we checking another blood gas so soon after the last one?

The answers will begin connecting to each other. A ventilator change starts to make sense alongside the blood gas trend. A vasoactive choice starts to make sense alongside the perfusion picture. Eventually, you'll stop memorizing protocols and start understanding patients.

That's when confidence really begins to grow, because you understand WHY.

3. Every experienced nurse was once the new nurse.

It's easy to look around and think everyone else has it together.

The nurse calmly managing the 23-weeker? She was terrified once too.

The nurse placing PICCs with ease? She missed IVs, plenty of them.

The nurse explaining blood gases without hesitation? She once Googled every ABG after work, sitting in her car before she even started the engine.

Nobody starts as the expert. What you're seeing on the floor is years of repetition, not some innate talent you're missing. The gap between you and that nurse is time and reps.

4. You will make mistakes.

This one is hard to hear. But it's true.

You'll forget something. You'll need reminders. You'll ask questions that feel "stupid." You'll make clinical errors that become powerful learning moments. The kind you never make again because you never want to feel that way twice.

The goal isn't perfection. The goal is recognizing mistakes, learning from them, and becoming safer because of them.

Never let embarrassment stop you from asking questions. In the NICU, the question you're embarrassed to ask is usually the one that keeps a baby safe. I promise you, the nurse you're afraid to ask has asked that same question before.

5. Learn from everyone.

Some of the best lessons I learned didn't come from textbooks. They came from:

• bedside nurses

• respiratory therapists

• neonatal nurse practitioners

• physicians

• pharmacists

• occupational and physical therapists

• speech therapists

• lactation consultants

Every discipline sees something different. Your RT will teach you how to actually read a waveform, not just a number. Your OT will teach you how to read cues you didn't know were cues. Your NNP will walk you through the reasoning behind an order, not just the order itself.

The more perspectives you understand, the stronger clinician you'll become. Don't limit your learning to nursing alone.

6. Organization is a skill you have to grow.

One of the biggest challenges during orientation isn't clinical knowledge. It's managing everything at once.

Medication times. Feeds. Labs. Documentation. Parents. Rounds. Admissions. Discharges. Emergencies… sometimes all in the same hour.

No one is naturally organized in the NICU. Develop a system that works for you. Many experienced nurses still carry brain sheets filled with notes, timelines, and shorthand only they can read.

Your first brain sheet will probably look like chaos. That's fine. By month three, it'll start looking like a system. By month twelve, it'll look like an extension of your brain.

7. Confidence comes from repetition.

You'll notice something interesting.

The first time you prime TPN tubing, it feels stressful, like one wrong move will be catastrophic. The twentieth time, you barely think about it.

The same is true for:

• Ventilator assessments

• UVC/UAC management

• PICC care

• Blood gases

• Chest tubes

• Medication calculations

• Neonatal resuscitation

Competence is built one patient at a time, one shift at a time. There is no shortcut, but every rep counts even the ones that felt shaky.

8. Parents are learning too.

Sometimes new nurses worry so much about taking care of the baby that they forget someone else is having one of the hardest days of their life just a few feet away.

Parents don't expect perfection. They appreciate honesty.

If you don't know an answer, it's okay to say:

"That's a great question. Let me find out."

Never underestimate how much your kindness matters. Years later, parents often remember how you made them feel far more than which medications you administered or how quickly you placed a line. Be the nurse who explained the alarm instead of just silencing it. Be the nurse who pulled a chair up instead of talking from the doorway.

9. Take care of yourself outside of work.

NICU nursing is emotionally demanding.

You'll celebrate incredible victories. You'll experience heartbreaking losses. You'll carry certain babies with you forever. Their names, their parents' faces, little things about them that made them special.

Find healthy ways to process those experiences. Talk with coworkers who understand without needing an explanation. Exercise. Spend time with people you love who have nothing to do with the unit. Sleep. Eat well.

Your patients and your team need you healthy.

10. What to actually do with your first 90 days

Beyond mindset, here's where to put your energy in those first three months:

• Weeks 1–2: Focus on the unit rhythm: where things live, how report works, how the team communicates. You don't need to understand every disease process yet. You need to survive the shift without drowning in logistics.

• Weeks 3–6: Start attaching the "why" to what you're doing. Ask your preceptor to talk through their reasoning out loud, not just their actions.

• Weeks 7–10: Start predicting instead of just following. Before rounds, talk about what you think the plan will be with your preceptor. When a blood gas comes back, interpret it with your preceptor and anticipate the changes. You'll be wrong plenty, and that's the point. You learn a lot when you are wrong.

• Weeks 11–13: Start teaching back. Explain a concept to your preceptor, a peer, or even a parent in your own words. If you can teach it, you understand it.

Keep a running list of every question you have to look up. After your shift or on your days off, spend 10-15 minutes looking them up and write down the answer. That list becomes one of the most valuable study tools you'll ever build. It's a map of exactly where your knowledge gaps were, in your own words.

One day, you'll realize you're no longer the new nurse.

It happens quietly but suddenly.

A newer nurse asks you a question, and you know the answer. You help during a code without freezing. You recognize subtle signs of deterioration before anyone says something out loud. You teach a family with confidence. You comfort a new orientee because you remember exactly how they feel.

And one day you'll look back and realize you became the nurse you admired. How amazing is that!?

My biggest piece of advice

If I could give every new NICU nurse one piece of advice, it would be this:

Stay curious.

The nurses who grow the fastest aren't the ones who know the most. They're the ones who keep asking why.

Every ventilator setting. Every medication. Every lab. Every intervention.

Curiosity turns information into understanding. And understanding becomes confidence.

Welcome to the NICU

Your first 90 days won't be perfect.

Some shifts will leave you feeling exhausted. Some will leave you wondering if you're cut out for this specialty. But if you keep showing up, keep asking questions, and keep learning, you'll be amazed at how much you grow in just a few months.

One day, you'll be the experienced NICU nurse encouraging the next new graduate. And you'll smile because you'll remember exactly where they started.

If you're looking for a place to keep building your confidence and understanding the "why" behind NICU care, that's exactly why I created my Certification Review Course. It's not just about passing an exam, it's about becoming a stronger NICU nurse at the bedside. Use code BLOG for 10% off when you're ready.