DS is 3 in June and used to go to bed absolutely fine. He would have his bedtime story and fall asleep in his own bed with the light off. For the last 4 weeks he has been getting out of bed and going in and out for the room. We’ve tried days of putting him back and he screams and keeps doing it. We’ve tried persuading, reasoning, sticker charts and nothing works. We are now at the point where we leave him to it and he just wanders around upstairs (stair gate is on and video monitor is on) opening and closing the bedroom doors. I think he is looking for us because he does ask where we are before bed now and I explain we are downstairs having dinner then will also go to bed. He promises to stay in bed but never does. He gets in and out of bed multiple times for at least 2 hours before falling asleep then he’s shattered in the morning. Have tried night lights. At the end of our tether because it’s keeping older DS awake. So fed up! Any suggestions welcome