I am newly prescribed Ativan. I have been on Klonopin for over 10 years. I take 1 mg of Klonopin as needed twice daily. They prescribed me 0.5 mg of Ativan, and I had a panic attack last night so I took the 0.5 mg of Ativan and didn’t feel a relief. But then I took my regular klonopin and it helped. Is the dosage just too low?