DS2 is 15 weeks (today) .
He started doing good stretches, 7/8 hours, only waking once in the night. For the last week or so, he's been awful, wakes up an hour after being put down, then every 2 hours.
I'm guessing its the 4 months regression, though it's kicked in a bit early.
The thing is, the same thing happened with DS1 (now4) he went from being a good sleeper to a rubbish one.
Whats really depressing me, is DS didn't bounce back! It took a good year and some hard-core night weaning, after I nearly lost my shit, while he just got worse, till he slept.
This is just a rant. It was the terrible sleeping that put me off having another for so long, but I told myself this one would probably be different.