Are your kids night owls or early birds?
Bub has never been an early bird. He'd be happy to stay up all night and sleep all day. Mini was an early bird when she was a baby but as she got older she slowly turned into a sort of night owl. I say sort of because she still doesn't sleep in if she stays up late.
Lelynn usually is up till 10pm atleast even though we put him to bed at 730 but is hard to get up (Night Owl)