Advice pls pls pls!

Okay I’m needing some experienced real nurses to put in their two cents on my current situation. For context I work in NICU. About 3 weeks ago I had a baby in which I pulled a 2ml prefilled morphine syringe from the Pyxis to draw out my dose of 0.12 mls, I had another RN (that nights relief charge) with me to witness my waste at this time. After pulling and wasting the original extra, I scanned the morphine in Epic but then realized I had like a couple minutes left on my insulin bolus so I went and told charge I was waiting for it to finish before giving the morphine. When telling her this, our nurse practitioner was in the nurses station (and to cut the story short) he told me not to give the morphine. After the practitioner told me not to give it, I had the relief charge/ same RN that witnessed my waste before come with me to waste the rest in the cactus. I asked her if there was anything else I needed to do other than chart not given and she told me no.

Fast forward a week and a half and I get a message from my manager:

“Tomorrow morning I will be in office around shift change for a few more evals… i got a missed waste for you I need you to sign. It’s not a huge deal when it’s never happened before, I just wanted you to know before I show you what they make us sign.”

And then presents basically a paper for me to sign saying I diverted the morphine.

I had talked to the practitioner who was there that night and told me not to give it, and another coworker and they both have said do not sign something that says I diverted. I want to ask what the alternative is if I don’t sign the paperwork, etc, but I would also like input from other maybe more seasoned nurses😃 TIA