@Ellijjtiny
Separation from baby in NICU
My DD1 was also in NICU (premature) and I had a crash section for abruption and suffered anaphylaxis afterwards and needed a lot of blood, too, so I wasn't able to go to NICU to see her as often as I wanted.
She was taken immediately from theatre and I only saw her briefly.
In contrast, my DS2 was also premature and in NICU, but I had a planned section and no complications, and was able to go and see him. He came back to the ward after a week and I breastfed him and topped up with EBM via tube.
I breastfed DD1 for over two years and she is an adult now. Despite our rocky start, we have a great relationship and she is a well-adjusted person.
DS2 has ASD and he and I were together as much as was feasible, despite a less rocky start. I have to be honest and say that despite this, and given that I breastfed him also for two years, he has a lot of difficulty with relationships generally and ours can be tricky at times.
I cannot answer your question about whether babies are more likely to have a more severe ASD if skin-to-skin isn't possible at the time of birth as I do not know.
I do think that as parents of children with ASD, we always wonder if it was our fault, or if we could have done something differently. I have sometimes wondered if some medication I took when pregnant with DS2 had an effect on him (it was prescribed, btw) but realistically, I look at my family generally and there are a lot of cousins etc. with ASD, and my sister also had it (undiagnosed). So I can see the familial links and tell myself that DS2 was always going to have ASD, no matter what I had done.
Please don't yearn for something you cannot change. It can break your heart.