Not sure what’s going on :(

Alright so my baby boy has been sleeping through the night pretty early on. Then around 3.5 months he started waking up around 1-2am and waking up early around 4am. Here we are a week away from being 5 months.. he goes to bed around 630-730. we give him a dream feed around 930pm. He sleeps until 330, eats, takes a while to go back to sleep, then wakes up at 6am.

Now starting yesterday he started nursing a little less than normal, and has gone from naps being anywhere from 1hr-2hrs, to 35mins-45mins. Ge got 4-5 hours of daytime sleep prior to yesterday which turned out to be 2.5?? We did his first nap of the day and it was once again only 35mins. What to do???

We did start solids a while ago.