My 3.10 year old is developmentally delayed - so not much speech, impossible to reason with, no concept of time or cause and effect, quite rigid in her bedtime routine and will become inconsolable if for example, her preferred pyjamas are in the wash or DS isn't in pyjamas for bed (the other night she screamed for twenty minutes because I tried to put DS to bed in a vest and nappy). She has been sleeping in a pull up since she potty trained in January, she didn't often wee in her sleep but got really really upset if she wet the bed. She hasn't wee'd in her pull up for over a month, so I really want to stop putting her to bed in them, but she blows a fuse if I try. We've been reusing them to save money, but they're a bit icky after a couple of nights, so ideally I'd like to stop using them at all. Any suggestions to ease the transition? I could just not give her one, and manhandle her into her pyjamas, but this will result in maniacal screaming and a very unsettled three year old. I don't really like upsetting her that much over something quite trivial but...