Anyone taking buspirone just once a day?

I was prescribed 5mg 2x/day. I started by taking 2.5mg in the morning but I felt terrible so I started taking it at night, then increased to 5mg at night. I felt better and although I still had some anxiety during the day I felt somewhat okay, for the most part. So, recently I started taking it in the morning too, 2.5mg (so 7.5mg total) and honestly I’m not sure if it’s working out. This is my 5th day I think of taking it in the morning too and I just feel like down, unmotivated, sleepy/tired, numb (same way I was feeling initially when I was taking it in the morning).

I’m wondering if I can just take it at night? Or maybe afternoon and night only? 

Any input would be greatly appreciated as I’m trying to figure this out… I reached out to the doctors but they know as much as drugs.com. Lol. One doctor actually quoted that “drugs.com says there are no interactions between vitamin d and buspirone.” Lol (I reached out to see if I can take vitamin d).