My one year old up until this week would never have a problem sleeping. Except for waking up at five am looking for a bottle. Since nov. he has been going to his dad's on weekends and I get him back Sunday nights for the week. Usually he has an attitude plus tanteums when he comes back. But this week has been the worst. Sunday night he was up screaming and I mean temper screaming from 11:30 pm to four am wide awake, then sleep for three hours then up all day throwing tantrums while being tired. Fights sleep every night. Tuesday night was good then Wednesday night he did the scream from nine pm to midnight then from three am to about four am. I know his father smoke weed cigs and what ever kind of drugs he has at the time in the apartment . I don't know what to do. At my house my boyfriend and I work in the morning plus our roommate does too. Any advice.