8 month old Nap Schedule?

Jackie

Trying to transition our girl to 2 naps a day instead of 3. She wakes up at 6:30am, naps at 9am, 12pm and 3pm: each about 30 minute naps. Bed at 7:30. I feel like it's impossible to get her to sleep longer than 30 min unless we are in the car.

Suggestions of a nap scheduled or routine?