After play fighting turned to physically fighting with their younger sibling after dinner despite separating them multiple times, tonight is the second night in a row I've needed to take myself away even before bed time. 9YO will not sleep in their room and kept chatting whilst I was trying to sleep which is often by 9pm latest. This is due to broken sleep from a 4YO who is getting up in the middle of the night then fully awake at dawn. I asked DC(9) to stop chatting whilst warning them they'd need to leave the room if they continued then asked them to go to their room to sleep when they did it again less than 3 minutes later. "Sorry, I wasn't aware the timer had started. I won't do it again." As its a recent pattern, ignoring our warnings, I stood my ground.
They then went to the toilet for what seemed the 10th time, after 20 minutes of them reading and messing around, I ended up boiling up when they asked to come in our room to sleep again and said no, I'd quite frankly just had enough and was so cross they needed to go to sleep in their room and leave me alone. I said that people don't just keep getting more and more chances in life and it was now a lesson. I feel awful but nothing seems to wind them down but me staying with them and I can't do it every night anymore.
They then put their light on and start playing, I go in and turn all the lights off, they turn them on again and get out a book to read. DH then isolates the lights, DC(9) then (despite usual) says they need light to sleep and have a massive meltdown. They then whack on an audio story, we turn it off as 1 always turns into 5 and they don't actually work to help DC with sleep. DC won't sleep with covers so the weighted blanked/sock doesn't help.
Please help with suggestions with sleep!