Nap question

My LO is a little over two and a half and has always been a terrible sleeper. I’ve accepted him not sleeping through the night at this point. The thing is…he doesn’t want to go sleep until 9:30-10 every night. Right now he has a two hour nap. I don’t want to drop them, because he clearly still needs them. But do y’all think maybe capping it to an hour would push bedtime up earlier?