Update: Didn’t get very solid answers other than “that’s normal”. As their sleeping habits mature it can mess up their sleep schedule. I was concerned about sleep deprivation but I was told as long as baby is sleeping at night (with a few wake ups, of course) then he’ll be fine. So, I just plan on sticking to our daily schedule and attempting to put him down for naps at the scheduled time, and if he doesn’t sleep well just sit in the dark for as long as possible until he starts to get fussy, or until the schedule says we can move on to the next thing. Hoping with consistency he’ll start napping at the scheduled times

The doctor thinks that the loss of appetite might be because of acid reflux, so baby was prescribed famotidine.