I am sorry to hear what your little Yorkie is going through. It is tough when you have a little one with seizures. It is not uncommon for a little one to go in a deep sleep after a traumatic seizure. It takes a lot out of the older dogs. The post seizure time is almost as bad for the owner as the immediate seizure. I would let your little one rest it out and just check on him intermittently. Since he is under a Vets. care and you are following the protocols, it seems you have everything under control. The worst part is waiting to see the Vet. tommorrow. I am however going to give you a link on canine Epilepsy and it has information and support for owners like yourself. Please let me know how the Vet. visit goes tommorrow with your baby.
I will be happy to help you with anything that I can. Please feel free to ask a question I will be happy to try and answer it for you.
I do want to give you one more link about Canine Epilepsy that may also help you with what your baby is going through.
The medications you have given for the seizures are all sedatives, which will hopefully help your baby and you get some rest until you see the Vet. tommorrow. Please let me know what the Vet says about your little one. Respectfully, XXXXX XXXXX 917