The way Lyrica has worked for me, I had to increase dose until I reached a plateau. You probably need more of the
drug, not less, until your body settles into it.
Lyrica is a powerful drug, but it is also good for what ails you when it reaches therapeutic levels. Again, your doctor will know about possibly increasing it.
If you are taking other drugs besides the Lyrica, they can have an affect on you, plus or minus depending on what it is.