If Scientology doesn’t believe in using medications and the Travolta’s did allow Jett to be on some meds earlier, then it would seem that the Travolta’s wouldn’t let their religion keep Jett from having a professional licensed nurse or caregiver on the premises. Someone suffering from seizures shouldn’t be left unattended for 10 hours, if the reports are accurate. Time will tell.
If you are taking courses you are not allowed to see a doctor without permission from the church except in a severe emergency. I think the Travoltas are probably so high up in the Church that they probably don’t take courses.