Day naps changed 8 months

So my 8 month old has dropped her 3rd nap but shortly after (literally weeks after) has changed her usual nap times too.

Used to be 7ish wake up... Now 6ish. Then first nap was around 9am... Now 11ish. Then second nap was around 2pm... Now 4.30ish.

I'm fine with her napping whenever and happy to adjust to a later bedtime. She used to be very ready for bed around 7pm but it's sometimes closer to 8pm now. But with her second nap falling so late in the day I worry that it could be why she's waking at night. Not sure how to change sleep times though as I just go off her cues!?

Is this one of those things where it's like, oh yep that stage... Or is this not common?