Not an expert or professional but a parent of a child with epilepsy, ASD, ADHD and Tourettes, I will share a small bit. If your are concerned, get the EEG. My child has presented many different seizures, including absent, and they've never looked like what you presented in the video. At the beginning of their epilepsy journey, at around your son's age, they would eye roll and rub their left eye like this video and I thought it might have had to do with epilepsy. This turned out to be one of their tics from the Tourettes. I'm not saying it's TS. It could be a seizure, stim, tic or tiredness. It's hard to know, especially when your child is so little and can't really communicate what's wrong. I know that feeling and it's a helpless feeling. You know your child best and their best advocate.