I have a 9 month old. We do two naps that are at least 1.5 hours. Usually morning nap is 2+.
7:30 wake
11:00-12:30: nap
4:00-5:30: nap
If morning nap is 1.5 or 2 hours, pm nap is closer to 3:30-5
8:00 bedtime
Sometimes when he takes a 2.5 hour morning nap, he a 1 hour pm nap. I never wake from a nap. I think if he needs to sleep, then he needs to sleep! I have daycare kids and if the babies under 5 months sleep for 3 hours, I do wake them. If the 2.5 hour naps messed with night sleep, I would reevluate, but nights are fine for us (8-7:30).