I am desperately trying to help my SIL as she has got into a terrible situation with my niece. Niece is 4 and SIL also has a 16 yr old daughter. They live in a 2 bed house my older neice has one room and SIL and my other niece share the other. Not ideal but the plan was to only stay in this house for a short time. My niece has always slept in her bed right from the start, because they share a bed she has always gone to bed some time as her mum but since lockdown and not being at nursery or out doing much she isn't tired till about 3am so she goes to sleep about 3am and wakes about midday. Whereas most kids are in bed by 7 and the parents have an evening to themselves she gets the morning to herself. But she starts school in september so she has to break this habit now. She knows that this isn't right but it is the only way she gets a bit of peace!!!! My SIL is one of the most laid back people you would ever meet she never gets stressed or anything so she just plods - hence why she hasn't bothered to sell her house before. My older niece is the one that basically told her things have to change she is going to bed before her little sister and she constantly rules the roost. Any ideas how she can break this habit. Mine were really good sleepers so I can't really advice her??