6.5 MO Schedule Help!

Our 6.5 month old's sleep has gone to shit! Can you help me troubleshoot? He's not formally sleep trained but we have a solid night time routine and he typically falls asleep in his crib independently or with minimal intervention (shushing, sometimes he likes to rub my arm lol).

During the week he goes to daycare so naps are kind of a crap shoot but he typically naps 10-10:30 (sometimes he skips this nap all together because he's the only baby that takes an am nap) and then 1pm-?? (when everyone takes a nap and they turn off the lights, white noise etc.) A good day at daycare is 1.5 hours of sleep and then a 30 min nap when he gets home around 5pm.

On the weekends we try to follow 2/2.5/2.5/3 with a 7:30-8pm bedtime and a DWT of 7am.

Bedtime routine is feeding, diaper/PJs/Lotion, sleep sack, read book, turn on white noise machine, lights off, sing song to him in crib, asleep.

He was sleeping solidly with one snooze feed around 4am for the past 2.5 months. However, lately his nights have been HORRIBLE. He has multiple false starts, waking around midnight and again and around 3am. And then EMW around 5:30am but he's still tired so we just have to contact nap with him until 6:30ish.

Should I skip the evening nap when he gets home and just put him to bed early? Should I let him sleep longer after daycare and have a late bedtime to make up some daytime sleep? Do I just ride it out and see if things go back to normal? I'm thinking he's overtired from not taking good naps at daycare but he's going for 3.5 months now and it's never affected his night sleep before!