Hi Mark13,
Stay with it - it seems like pregabalin is delivering some benefits.
In the early days of taking a medication like pregabalin, you are more likely to experience a roller-coaster effect until a steady base of the medication builds up in your body.
One way to counter this is to take the medication split into three or four doses a day for the first two weeks or so, then switching to the regular dosage. Doctors usually don't recommend this as it's too complicated for most pharmacies and patients.