When Aleks fell asleep at dinner time due to being sick, I assumed he'd just be in and out of it for the rest of the night, since he seemed so lethargic. He remained rather lethargic, but woke up and stayed up. At 1 a.m., he'd thought he'd take a bubble bath.
By 2, he was still having trouble sleeping and Bastian had woken up feeling miserable and thus screaming. Needless to say, no one got much sleep. Least of all Papa.