Excessive daytime sleepiness can occur, due to inadequate sleep
at night due to sleep
disorders like obstructive sleep apnea
. Hope you are on CPAP, ensure to
use the CPAP machine regularly. Go for regular follow ups with your doctor to check to see if the apneas are under control and if your sleep is adequate. If in spite of this Excessive daytime sleepiness persists then other disorders like narcolepsy need to be considered.
Hope this helped and do keep us posted.