@lisa619 They want you off it for two reasons, and they are both important for you to maybe learn more about on your own, and then to understand....AND....to accept....so that you can relax and let them do their job. I'll explain:

a. Atrial fibrillation won't kill you. It can make you miserable, and maybe WANT to die, but it won't kill you by itself. It DOES progress...for most every patient...and it becomes harder to control or to treat the longer you let it go without treatment. So, treat it early;

b. The Dofetilide is obstructing the EP in his/her attempt to help you. It is masking the arrhythmia and making it hard for the EP to find it, and then to nip it. The EP wants you off Dofetilide (remember, it won't kill you!) hoping that your heart will act up more and make the foci/reentrants of your AF more obvious, and once he can spot them, it's easy to zap around them with energy and dam them up with scar tissue....which is what an ablation does. Ablations surround the foci with circles of scar tissue which the errant signals cannot cross. When they do a PVI, a pulmonary vein isolation, which I think is all you'll probably need (you're still in the paroxysmal stage because your AF comes and goes), he literally burns tiny dots all around your pulmonary vein outlets on the back wall of the left atrium, and this confines those extra signals that make the atrium beat chaotically. No signals = no AF. Simple.

Dofetilide is hampering him in his deisre to free you from your own AF. If you were to ask me, I'd say two months in misery might make it all history when he ablates and you wake up with a heart happily beating in rhythm. It's day surgery....you're home that night.