Just seeing this. I hope he is better this morning. I would have suggested taking him into the ER vet last night and definitely watching him closely all night. If is isn't a lot better this morning, I would go ahead and take him in. It does sound like a hypoglycemic episode and at that age, he is definitely prone to them, but it might have been low enough to cause a seizure, as described by his behavior. He needs to be eating frequent small meals every few hours to keep his glucose levels steady. Please post an update and I'm sorry no one saw this last night when you were asking for advice.
