Trying to cast my mind back to 3 1/2 years ago when I had my twins.
I think I used to try to feed them at 7am/11am/3pm/7pm/11pm and then whenever the first one woke in the night I would wake the other.
Always always fed them at the same time. I mix fed but when using bottles I would have various methods - rest one head on each of my thighs, or I had those v shaped pillows and rested each one in those, or in bouncy chairs.
DH was on duty from 7pm to midnight. So I would go to bed at 8/9pm and hopefully then get 5-6 hours sleep before they woke at 3ish. We always fed them at 11pm even if they hadn't woken.
We had them in these cots on wheels so we could push them easily between their nursery and our room and we had a single bed in their nursery too. When they woke in morning DH would change their nappies and then I'd feed them and they would hopefully go back to sleep so I tried to as well.
I was a bit Gina Ford about nights - didn't speak, play, make eye contact, didn't change nappies unless poo, just fed in pitch dark room and back to cot straight away. Also I only gave them very small feeds at night (3oz of EBM) so they wouldn't get full at night and would hopefully then fill up in the daytime.
They did both start sleeping long stretches at 6 weeks and were going 11pm-6am by 12 weeks, and after then life was so much easier until weaning but don't think about that yet
Did no housework other than laundry, and absolutely no ironing! DM or DMIL came to help quite a bit too in the early days, always made them earn their keep with ironing and cooking though!
Hope this helps in some way!