Lengthening wake window leads to even shorter naps. Can’t get 10 month old onto two naps.

My baby is 10 months old today. Been trying to get her to take two naps instead of three. On three nap days she will sleep for 25-30 mins. Any time i’ve tried to do 2 her naps end even shorter, only 15-20 mins. She doesn’t go back to sleep. Don’t understand how i’m supposed to get her on two naps if stretching wake windows results in only shorter naps. Anyone else have this problem and if so what did you do that helped solve it? She has perfect night time sleep and is happy/content after her short naps so maybe she’s just low sleep needs? Please no telling me that she should be on two naps and then providing nothing helpful about how to do so. Last post i did about it was just tons of that and don’t really understand what the point of commenting was then.