babysitting nightmare

My brother is now a single dad of a 2 year old And 10 month old . He works night shift so they come to my house unti He gets off in the morning . Well his kids Are not the easiest thing out there the 2 year old has autism and he's so hard to control and the 10 month old is so clingy and Crys a lot anyways . It's so hard getting them to go to sleep like the 2 yr old went to sleep at 12 mind you I also work in the morning . Anyways they wake up crying and screaming through the night and it's starting to bother my bf . Idk what to do ☹️