Thanks for advice. I tried limiting the feed to 3oz 2 nights ago - it backfired as he woke hungry at 5am.....
so i decided that being only 12 weeks old he must still need the feed. Then last night - he only woke for 1 feed!!!! he did it himself. Who knows what is to follow, but ithink i will stick with what he wants for the time being. That linkhas some great advice though if trying to wean an older baby of night feeds!!