I'm starting with Gilenya soon too. I've been on Copaxone for over five years now and my symptoms are getting worse so the neuro suggested I try something stronger and I chose Gilenya.

I've been through all the pre-testing and my first dose will hopefully be this coming week since I only have two of the 40ml shots left of my Copaxone.

My worst symptoms are fatigue and weak legs and hands. My voice gets weak after a few hours of the day too. I'm hoping it stops all of that from getting worse.

I was on Ty for almost four years and I had no rebound effect when I stopped it and went back on Copaxone, so maybe that will be the same for you when making the switch. And Gilenya is a powerful med like Ty so once you get on it, it should hopefully hold off any bad relapses that might have occurred had you just stopped it without going on another med.

I'll post my updates here and maybe we can compare notes.