I had a revision from an RNY performed in 2000; to a DS in 2008. I had gained a lot of the weight back and was approaching diabetes, again.
If I were u, I would start with dsfacts.com
and read up on the surgery, doctors ect. Then come back here and ask questions, there are many of us who are willing to help you.
Be aware that it's a 'LIFETIME' commitment to vitamins and keeping your bloodwork in a healthy place. You have to have a bit of a thick skin and be an advocate for yourself with your doctors etc. There is a risk of a lea****uring and other complications, because you are a revision. But most of us went thru without incident.
You will need an experienced surgeon who has done revisions before. You may have to travel, don't let that scare or deter you if you are truly serious about the DS.
How much weight have you re-gained? When did u have your RNY?