There is a part of me that wonders whether staffing levels have anything to do with this and whether the pressure is on parents so the nurses do less per child.
I wonder this too. It is stressful to work short staffed, not able to give enough to those in your care.
My DD was not prem, but very poorly when born. She got rushed to a hospital 60 miles away. My DP could not go with her as he had my 11 year old DD1 to care for and I couldn't, because I was not well enough.
When I joined her the next day, it was an immense relief. DP was able to hand DD1 over to her Dad the next day and join us. Too far to travel regularly, so I was a patient and DP was in one of the parent houses.
I clearly remember talking to DD1 and her crying on the phone to me, wanting a cuddle and reassurance and to see her baby sister. I was crying too, telling her I had two beautiful girls and I couldn't cuddle either of them, her because she was so far away and DD2 because she was so poorly. Your DC1 is too young to have even this level of understanding really.
I remember the awful feeling of not being able to do anything 100% right for anybody, the absolute guilt and desperation.
DD2 is now 13, DD1, nearly 24, with children of her own, but I have been reminded of this so clearly, all these years later, just reading this thread.
I think you were just a mum in a desperate situation, doing her best, to be fair, dad was too. Try to put it behind you and not stop you enjoying your new baby. Congratulations and all the best for the future.