We're back. Verdict: he needs more milk and some water. They wanted to keep us in overnight so that I could express and they could get some idea of how much ds2 was getting, and so that, if I didn't express enough to top him up he could have a bottle of formula and I could have some rest. But I don't want to be put under pressure of measuring my output - especially after this stressful evening I doubt I could express much. Besides, if it's a matter of rest, I will sleep better at home htan on a ward.
So I'm bfing him right now, and will go straight to bed, then dh will give him a bottle of formula before he goes to bed in the hope that ds2 and I will have enough hours' sleep to supply a good feed and take a good feed. I think ds2 has been getting dozier and feeding worse, so hopefully this will help us get started off better again.
Paed was also concerned that perhpas ds2 wasn't pooing because his body was conserving water, so gave him a tiny suppository.
Oh! Just heard a most wonderful sound from ds2! The poo is coming through!
So, remember that I'm uttrerly braindead from lack of sleep, please advise me:
1 - how to get a good latch
2 - how to boost supply
Should I hire an electric breastpump?
And thank you all so much for listening to me and helping me.