We used to put my son to bed at 7pm but he was waking at 4:30 almost everyday so we pushed it back to 8pm and he’s now usually 5:30 to 6:30 wake up but I get up at 5:30 for work so it’s hard to get him back to bed when he knows I’m up. He’s two now and still has an hour nap a well.
I’ve read recently that the chemical for sleep doesn’t get released in toddlers until 7.30 ish and anything that omits blue light weave lengths such as tablets phones or tv can inhibit the production of this chemical. So we should try to keep them away from things for 2 hrs before bed. Apparently a lot of night lights omit blue light as well which isn’t helpful