What time at night?

HPickle23

What time do you put your LO down for the night? I'm curious because we started putting DD down every night at 9 and she's been pretty consistent  since day one. Now I think she's hitting some sleep regression because she doesn't nap as much during the day and sometimes skips a nap all together and stays awake for hours and then gets really cranky. Because of this she's falling asleep at 8 or sometimes even 7:30. I'm trying to figure out if I should just start putting her down earlier and stick with it or try to keep her awake until 9 so that her routine up to this point doesn't change. Any advice? I read somewhere that babies should be getting put down early l like 7pm, so I just don't know.