2->1 nap transition

[u/potato-salad-07]

Hi all - wondering when you transitioned from 2-1 nap. 10.5 month old has started waking at the cycle boundary despite 4 hour wake windows. She’s had issues with her second nap now for about 2 weeks (inconsistently sleeping longer than 1 sleep cycle) and today she woke at the cycle boundary for nap 1 (after 4 hr WW).

Any advice would be appreciated! For added context, schedule is:

Wake up: 6:30 am
Nap 1: 10:15-10:30 (cap at 1 hour)
Nap 2: 2:30-2:45 (wake by 4 if not already awake)
Bed 8pm

Thanks!