So I see this a lot online, when trying to get child to stay in bed the advice is to calmly take them back to bed each time they get up and eventually they will stay. But I'm really struggling with this with my DD as she won't be 'calmly led' back. I would have to pick her up and drag her back to the bed while she fails and tantrums, as her go-to move is to jump put of bed, run to her bedroom door and crouch in a little ball refusing to move or do anything.
Have tried just leaving her to it to see if she will get back in bed herself but after a few minutes of her sitting there behind her door she will start to hammer at the door and scream, which then disturbs other DD so I end up going to her every time she jumps out of bed. At the moment it's taking 2/3 hours each night before she finally happily stays in bed. She just finds anything and everything to ask for to delay bed time for as long as possible.
She has just turned 3 and we were very lucky for a long time in that from 3 months old she went to bed ridiculously easily and slept right through, so now things aren't like that we are struggling to know how to navigate it. She has been like this for a few months now.