I think the problem is you haven't been prescribed the correct dosage schedule. Guidelines on Pregabalin for anxiety suggest you start at 75mg twice a day. Then up to 100, 150, 200, 225, 300 (if required). This would give you time to adjust to the side effects. Whilst Pregabalin can have an almost immediate effect, you won't know if it is the med for you long term until you have progressed through the doses and allowed a week or 2 at each dose to see if your anxiety stabilizes.

It is definately a very common pattern for anxiety to be at its worst in the morning (or evening).

Tommo x