I think there is a sleep regression at this age. Could wait and see?
Nothing wrong with 330pm wake up, I used to do 4pm 🤷🏼♀️
Does lo self sooth? Sleep is low at 5am..... maybe can't self soothe at this point?
I have read a few ways to get out of the morning 5am wake up.
Move and cut that 1st nap to 30mins to 45mins. Or generally moving that first nap to more 930am. The theory is that they don't get used to an early long nap so sleep later in morning...
Bringing lunchtime nap forward, if cutting the first nap. Giving the 2 hours sleep and then 4 hours after this nap before sleep. So might look something like.
930am till 1015am. 1pm/130pm till 3pm/330pm 730pm bed. Maybe 7pm so 4 hour gap..... but may wake earlier
The other way is around 430am to 450am you stir your lo. So they settle into a new sleep pattern. You have to do this for a week before takes effect. I was never brave enough to do this.
The other one leave naps how they are and then pop lo to bed earlier say 7pm. But again that's high risk........
Sorry not much help. But things people consider.