My youngest has always been a good sleeper but since 2 she has woken up in the night and takes 1 or 2 hours to get back to sleep. It's far less now but recently gone up to 2-3 times a week. I have tried going in with quick reassurance but this doest work, so I go and lie with her until I know she is asleep. I can snooze so I'm not losing a whole 2 hrs. I'm worried about her sleep loss. She finds it hard to get up next morning. It's not about nightmares and I have stopped itchy skin with cream and fish oil. Should I give her music to go back to sleep to? I do praise her if she sleeps well but maybe a reward chart? Or should I just keep getting up and not get into bed with her?