I dont know much about the sleep disorder but if your having mini strokes please figure out why and get the situation fixed because small ones lead to a big one like my grandma had after many mini strokes and it was the most horrifying thing ive ever seen with her entire left side paralyzed and not able to even swallow. Get your artery in your neck checked regardless of the ones around your heart. If blockage is not the cause then please find it.
Hello and hope you are doing well.
It could just be that you are tired and need more sleep. Just give yourself more time to sleep/rest. If the symptoms still do not resolve, then you have to get assessed for sleep disorders. Certain sleep disorders like obstructive sleep apnea can cause disturbed sleep and hence the need to sleep more. And others like narcolepsy can cause excessive sleepiness per say.
If it persists or is troublesome consult your doctor for assessment to rule out sleep disorders.
Hope this helped and do keep us posted.