I know that this will pale into comparison with how long others have battled sleep deprivation, but I am on my knees here.
DS2 is 16 weeks old and since 12 weeks his night sleeping has gone down the pan. He has never slept through, but before 12 weeks was at the point where he would wake 2 or 3 times for a quick feed then go back to sleep (awake in moses basket and settled himself).
Now, he goes down at 7pm as usual (after normal bath bed routine) but will wake up any time from 9pm and then every 45 - 90 minutes for the rest of the night. He grizzles initially, then really cries until I feed him (BF). He will maybe feed for 10 minutes or so then falls asleep at the breast. If I try to transfer him into his cot too early, he wakes and it starts all over again. Occasionally I can be up for an hour with him, trying to get him to sleep.
He won't take a dummy and occasionally sucks his thumb for comfort but it's a case of 'if he wants his thumb he wants it, if he doesn't he doesn't' so it's not a guaranteed way to get him to sleep.
I just don't know why he will self settle for daytime naps (even though these can be as short as 30 minutes) but won't for night wakings. I only BF him to sleep at night to minimise the crying and not wake up my other DS.
Can anyone offer any suggestions? Sorry if this is rambly - I am shattered and horribly aware that I may well be going up to feed him in 45 minutes ...