Losing interset due to heavy tiredness

Patient: I am 35+ and my wife 30+. we are trying to have a baby. The problem is Iworked in a MNC (6 days week). I used to return home from office around 10 to10.30 at night. It is required to have daily sex to achieve the same. Butsomehow i am loosing interest in sex daily due to heavy tiredness.Please tell me how I regain my interests in daily sex.

Symptoms: losing interset due to heavy tiredness