Lurking OP... having similar problems here though DD is 2.3 and wishing had never made the move to the bed this early
I agree with consistency, though more just because I am clinging to the hope that something consistent will work rather than because I've had success yet!! I agree with a PP who says that getting irritated/stressed out probably just winds them up more and makes them anxious so I think the extremely boring approach is probably best... tried that tonight and it certainly made me feel better so will stick with it for a few weeks and just hope!!
Without wanting to hijack, though, can I just ask people, re the rapid return and being boring etc - what did you do about requests for water...? DD has, I think, cottoned onto the fact that it's hard to deny her requests for water, so this is is 'reason' she gives for continually getting out of bed and then, even when she's in bed, for why she needs us to go in... I guess I can still do the 'boring' thing by just not saying anything and giving her the water, then leaving asap...? But any other suggestions?? If I refuse to give her a minute sip of water, she gets upset and that just delays everything even longer.
I don't think I can leave a cup/beaker by her bed as she'll probably spill it/mess around with it and then we'll have a damp bed to sort out!!! Or maybe I should just do this and see what happens...?
Sorry you're suffering though OP, it is depressing after having had a good settler... It is taking a solid 75-90 mins here every night and it is SO boring/such a waste of time!!