Confused mummy on how much milk to give if not doing night feeds

I think we basically feed like 150ml per kg to our baby. My baby is 3 mths old n going by 3 hourly feed, she should drink abt 80ml per session n there should be 8 sessions. I see mummies putting their babies to sleep from 8pm onwards till morning… if so, the 8 sessions are squeezed within the day? Currently I’m feeding my baby until 10 or 11pm n would like her sleep until 5am then feed her again so that she does not miss out too much of her milk intake… is that alright? If i should let her sleep all the way then how do i make up for the lost sessions?