That's it really. DS (16 weeks) has never really had much of a pattern, but from a few weeks old was at least sleeping 2-3 hours in his first stretch, then for a few lovely days he managed 4-5. But at about 12-13 weeks he suddenly started waking in the evenings, on a good day after an hour or even an hour and a half, but more often after 45 mins or an hour, or even just 15-20 mins.
Then he wakes up constantly through the night - last night I think I saw just about every hour on the clock. He sleeps in the Moses basket for his first stretch, but then comes in with me as otherwise I'd get no sleep at all. His naps have also gone to pot - he manages to do an hour, sometimes a bit more, in the morning, but after midday it's a real effort to get him to sleep at all. He'll usually do a couple of 30-min stints out of sheer exhaustion, but very rarely more than that.
I guess what I'm asking is - is this early 4-month sleep regression (not that he really had anything to regress from), and if I just ride it out might things just improve on their own in a few weeks' (months' - gah) time, or can/should I be doing anything to improve matters? Clearly he's too young for any sort of sleep training, even gentle stuff like PUPD, but I'm going a bit demented. In the daytime things don't seem so bad, but most nights in the middle of the night I just want to cry with the exhaustion of it all 