Anxiety Support Group
Anxiety is a physical condition marked by intense and persistent feelings of distress, fear, angst or dread. General anxiety caused by routine day-to-day stresses usually passes quickly and is experienced by almost everyone at one time or another. However, such feelings that linger over time and are very difficult to cope with, and which lack a clear cause, may indicate...

I can imagine that at that dose you are tired.
I used to get tired from it at the dose I am on but my body adjusted and I don't get that tired anymore, but in saying this I do need to take it before bed to help me sleep at night, so it does relax my body.
I would try to talk to your doctor and see if a lesser dose at first would help with getting used to the tiredness.
In saying this, most anxiety pills do cause tiredness, but from my experience it gets better as you take it.
Hope this helps.
Now that you said it is 0.5 mg a day, that sounds a lot more reasonable.
Personally it took my body some time but I have gotten used to taking 1 mg 1-3 times a day.
I would suggest taking it at night for a couple days to a week before taking it during the day. But if you don't have anything you have to do like driving or working then maybe try it during the day.
I have found it to be a good medication for me. I hope that it works for you.