Sleepyness/fatigue

I've been on trintellix for 7 months. I was on 10mg and then went up to 20mg within a month. The crushing fatigue and sleepyness started with the 20mg. If I take it at night before bedtime, I sleep for almost exactly 6 hours and wake up exhausted (that's not enough sleep for me.) Taking it in the morning means I am sleepy and exhausted all day. Some days I have slept more than 20 hours. I'm sleeping my life away, when I am awake I am still exhausted.

The trintellix HAS helped with my depression, when I am awake, but I can't go on this way.

Is there a way to take it at night without sleeping only 6 hours? Because I am at the end of my rope here.