You gotta start doing it with a bunch of smaller less important things. We started with things like bed time 7pm was lights out not the start or getting ready. We started around age 3 or 4 and after probably 6 months it really sunk in. When planning to leave the house we would give a 45m warning and since day 1 we never had issues. With that said though kids grasp things differently. Some kids thrive on schedules and routines…