donkeymum - A is the same as your baby; I don't bother trying to get him to sleep in the evening as he'll either sleep 6 hours starting then so wake at 2am and every 2 hours after, or I'll try to wake and feed him at 10.30pm and he'll grump, not take much, and then wake 2 hours later.
If I just make sure he feeds loads in the evening and don't try to make him sleep until 10pm or later, he'll then sleep his 6-7 hours at the same time as me, and then we both sleep for another couple hours before he insists on getting up.
I'm not waking up soggy as much as I used to, although last night my friend fed him at 11pm and I forgot to express before sleeping - so woke up in a wet bed at 4.30 and had to express (200ml in 10 min!) before going back to sleep, and then feeding him at 6.30am.
Once A has his own room after Christmas I'll try to get him to sleep in the evenings, but atm I'm keeping him as portable as possible - often going to friends houses in the evening so other people can hold him and I can relax a bit! He mainly enjoyed the Mamma Mia! singalong a couple days ago - expose them to culture young, that's what I say.