I also had my DS early, as we got nearer to going home the SBCU nursery nurses went through everything about feeding at home so hopefully they do for you too.
There was also a feeding team to discuss all this with, do you have the same?
To answer your points from our experience:
1.Whilst we were in hospital, donor BM was phased out and switched to formula (instigated by the SBCU), we weren’t given a choice, they recommended nutriprem2 & DS tolerated it so we didn’t change.
We had it in bottles pre-made in hospital but then once came home switched to powder, on prescription (I can’t find it for sale anywhere).
It didn't occur to me but I think others were keeping some of their expressed milk at home & freezing it so had spare once came home too.
2.Cue led in our SBCU basically seemed to be 3-4hourly, and most babies were at the 4 hour mark, so think you’re right.
The best advice we had was to keep in the hospital routine - we came home at similar time to a friend who had a baby at term and whilst they were doing feeds every 1-2hours on demand, we were settled into every 4 hours and made a massive difference to my energy & sleep, getting things done & able to go out and about. Felt like we deserved that silver lining from our situation!
5.Also agree on not heating it, DS had it cold, warm and anywhere in between in hospital depending on the nurse looking after him & think it’s helped as don’t need to worry about it at home (other than making sure not too hot!).
Otherwise no advice on establishing full BF - I was expressing half of his daily feed in hospital so decided to go with bottles to get him on more sucking feeds (was fed down a tube whenever still asleep at feed time & needed to get onto all sucking feeds to get him home) & just put him on the breast to practice latching on.
Intended to build up supply once home but ended up going the other way, found harder to find time to express which I needed to do to build it up as we stuck with 3-4 hourly feeds, and preferred knowing how much volume he’d had (and that my DH could feed him too) so BF didn’t work out for us.
Good luck with it all!