Hi, advice required before exhaustion gets the better of me please 
My DS is 5 months old in a couple of days and his sleep went haywire 3/4 weeks ago. Previous to that he'd been sleeping from 7pm to 6am. Now he's awake every 2 to 3 hours and is hungry enough to eat between 150 and 210ml. He falls asleep again straight after eating.
He wasn't gaining weight well until about 6 weeks ago but I moved from bf to ff at that point on doctors orders and since then he has put on 4llbs or so.
Putting him down isn't a problem, he self settles pretty well (he will occasionally wake after 45 mins and will not go back down for a while though) it's just the frequent night waking that is.
He naps well during the day, usually 1 x 45 min 2 hours after getting up, a longer sleep of about 1 1/2 to 2 hours early afternoon, then 2 naps of about half an hour before he goes to bed at 7/7.30pm.
So, do I just ride it out? Or do I start trying to wean him off one of the night feeds? When he gets up in the morning he often doesn't want his breakfast bottle at 8/9ish, so I think that he might be eating too much during the night. We got up at 8.30 this morning and he's only had 140ml so far.
My DH works away during the week and I don't have my family nearby, so it's pretty difficult somedays.
Sorry that was long - any thoughts would be appreciated!