revound migraine/imitrex

please helppp. I was put on palemor( 25mg) for migraines. it helped me to almost have no migraines at all. I took it ca. 5 weeks, then stopped because it made me too tired. the 4th after stopping it, I had ine of the most terrible migraine of my life.
I used Imitrex quite often after that. I realized that I was getting headaches almost daily and took Imitrex every day. now I have headaches almost every day and nothing helps but imitrex. I have headaches/migraines 5 days out of 7. i started palemor again but it seems like it does not work as before. should I increase th dose? I want to stop taking imitrex every day.
I have an appointment with a headache specialist in 2 weeks. please helpppp