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Another stroke to consider.
Hello and welcome to "Ask a Doctor " service.
I have read your query and here is my advice.
It is possible that another stroke happened, so, an evaluation in this direction is necessary.
So, you should try to convince him to go to the ER and to get evaluated further.
Besides treatment for seizures, blood thinners ( aspirin for example ) should be used if there are no major contradications.
Evaluation and treatment for possible high blood pressure, atrial fibrillation, also are necessary.
Hope you found the answer helpful.
Let me know if I can assist you further.