Hi, Just wondering how many sleeps anyone's 1 year olds have?

My bub is wonderful in sleeping through the night (she has since she was 5 weeks old) however during the day it's beginning to be a struggle to get her down for her 2 sleeps....
She would get up about 6ish, have first sleep 8.30 - 9.00ish, second sleep 1.00 - 1.30ish and then down at night at 7.30pm.
With her day sleeps she will just play in her cot (she has always self settled herself) up to an hour or more before going to sleep lately (after about 20-25 min if she is still playing she normally gets up for 5 minutes to read a story, quiet play before trying again, this mostly tends to work and she will mostly drop off after another 10/15min of playing quietly in cot)

Just wondering when we should be dropping down to one sleep a day...??
Ta...