I came to NICU from med/surg/tele with 9 years experience. I had been an extremely competent nurse, go-to for IVs and occasional charge nurse. Going to NICU revealed that practically none of my knowledge crossed over. I was for all intents and purposes a new grad. I generally say the only skills I brought were time management in that I mentally knew how to arrange tasks once I figured out which ones were expected.
Thankfully, my preceptors didn't expect me to know too much specific about NICU and treated me respectfully. They would ask my knowledge base on a topic and not scoff that it was so different from NICU. They would just say, "oh ok, great, so in NICU we do feeding tubes like this and we do it differently because of. . . "
Every unit is going to have their own lingo so there is no reason to demean you because you don't know terms like "chevron" which I had only heard in nursing school
and then not again until I got to NICU.
In general I had a very positive orientation in my unit, and they gave me as much time as a new grad would have. I never hated med/surg but am ever so thankful to have found the little gem that is neonatal nursing.