Does the exhaustion get better?

Started on 25mg for 1 week, increased to 50mg for 2 weeks now finishing my first week at 75mg (4 weeks in total).

The first week was tough with side effects and feeling tired then I think I started to feel better. Since I started 75mg I am SO tired. Like need a nap tired. I take it at night after dinner and I can fall asleep ok but sometimes am up in the night and can’t fall back asleep and/or wake up super early (4-5am).

Should I switch back to taking it in the morning or does the exhaustion get better?