Thomas, if you are falling asleep throughout the day, unless you truly do have narcolepsy, you are not actually sleeping deeply at night. Apnea actually keeps you at a base level of awake through the night, an prevents your body from reaching full REM sleep, which is essential for rest. If this continues, you won't just fall asleep during slow times of the day, you'll actually start hallucinating. You need to consult a doctor and possibly get something that knocks you out fully, during nights you can have 9-10 hours of sleep. Otherwise your health is at risk. You also should consider a CPAP machine.
Edited: Gknightbc on 25th Feb, 2018 - 3:24pm
I know with my sleep apnea I was getting to the hallucination stage before I got my CPAP machine. The difference was night and day. Of course, I only had to pay for the machine as all the testing and doctor visits were covered by Medicare here in Canada. It's definitely not something to let go if you can find some way to get some assistance with paying for things it will definitely be worth it.