I'd say just stay consistent with the routine, also maybe he is ready to start only napping once during the day maybe just for a longer period I hope that you can get some rest
Hi! Sleep consultant here 👋🏼 stick with 2 naps and wake windows that go 3 hours awake, nap, 3.5 hours awake, nap, 4 hours awake, bedtime. That usually works well at that age and during that regression. If he doesn’t fall asleep in the crib yet, that will definitely be an important thing to teach him, especially because you have another baby coming. I would also recommend against any screen time as experts say babies should not be exposed to screens before 18 months old and it should be very limited after that. Cocomelon is an especially overstimulating show and can lead to lots of crying and not wanting to sleep later on even if he appears to enjoy it while it’s playing. Screen time disrupts melatonin production which is the sleepy hormone and you want your baby to be releasing that hormone at the right times throughout the day to help him sleep. I don’t say this with any judgment, I just know screen time can be a trigger for lots of dysregulation and poor sleep. Good luck!
I sadly have no tips but I am in the same boat!!