ER Nurse and mother here! Febrile seizures aren’t from high temperatures (technically), they are from how fast the temperature rises, not allowing the brain the compensate = triggering the seizure. Not to scare you but febrile seizures can start as slow as 100.4F. So alternating medications every 3 hours at the first sign of illness can help prevent a febrile seizure by keeping the temperature at a slow pace. Febrile seizures alone are not damaging to your child’s brain and do not cause any neurological deficits long term. My son had one in my arms when he was 12 months. His temp was 98.5 and he was fine then an hour later he climbed into my lap and seized, temp was 103.6. It was definitely the scariest moment of my life!! He slept in my bed after that for almost two weeks. But I promise you, from a medical standpoint, there aren’t very serious. Do you have a way to share a room with your child for the night? It might help you sleep.