You have come off the Gilenya slowly, so that should minimise the chance of a rebound. I came off Gilenya in Nov 2012, by doing much as you did - took every second dose for a month, then every third day for a month. I had no rebounds or relapses that I noticed. At that stage I had been fully OMS for about a year. I had a followup MRI a year after the coming off Gilenya, it showed two small new lesions, and looking back I now attribute those to the "rebound effect" of coming off Gilenya. I have had some small sensory issues since then, some tingling in my arm, and numbness in one hand, but apart from that I have been really great. I experienced no big relapse and I continue to not want to put drugs in my body. I realise that people are all different places with this, and that some choose to use a drug, but I am glad to not be doing this.
I have to push hard against the grain of what my neurologist is telling me about this, he really wants me to be back on a drug, for his peace of mind, not mine! But I feel so much better off the drugs, that I am going to be strong about this and continue to argue against them.
CB, I hope you can feel happy with your decision and to be able to not keep looking around the corner for a relapse. Hopefully it wont come!