My DS is nearly 15 weeks. Until a few weeks ago he would need feeds at midnight, 3am, 6am, and 9am and would have various naps during the day, which was manageable. But for the past 3 weeks or so he's waking up every 1-2 hours at night. Usually he has a 2-3 hour nap in the afternoon but recently he only seems able to nap for 45 minutes at a time and is getting overtired.
We co-sleep, I often put him in his sling during the day, he's exclusively bf, he's been trying to sit up and roll over for a couple of weeks or so with varying degrees of success. I'm getting so tired now I'm finding it harder and harder to settle him and function. He's also started screaming when he wakes up sometimes and it doesn't seem like he's particularly hungry/got wind etc.
Is this the 3-5 month sleep regression? If so, what can I do to help and how long will it last? If not, what could be causing this change in habits? I need to have some sleep soon!