I have the same problem. My headache specialist has a slightly different take on the matter. What she wants me to do is worry more about taking my meds AS SOON AS I FEEL A HEADACHE COMING ON. When the pain is still only a 1 or 2 on the scale and worry less about the number of times in a week I take the meds. Very different that most doctors say.
Her thoughts are 1) that rebound happens less often than people think and 2) if the headache is treated sooner then it has less chance of comming back because it has been gotten rid of totally instead of just partially.
This has helped me. For most of my migraines 1 or 2 Treximet and bang goes the headache. I still have issues with those I get around time of month but as long as I have enough Treximet then I am fine, usally.
I must admit that I just had a bad week where I ran out of med and had to make the trip tothe ER so it is not 100% but I have not been in the ER for at least 4 months where I was every month like clock work.
So I recomend trying to take your abortive sooner like when you just think you are getting a migraine or the pain is still below a 3 or 4 and see if that helps.