VSG to DS in 2 weeks and nervous

Had my VSG 2012 and did great, lost 100 lbs and hit my goal.  The last couple of years I've been slowly gaining again and after I lost of my dear mom, I really gained again.  Now I've gain about about half back which has been so heart breaking.  So now I am considering....well booked to have the DS.  I am self pay and plan to go back to mexico. I wasn't afraid of having the VSG at all but the DS has me scared.  The money isn't the issue, I just don't want to anything bad to happen and I don't want to go through another surgery that doesn't last.

I like reading about those that are 5 and 7 years out and still doing good.

Any advise you can give would be helpful.   I don't eat carbs but sugar is my issue.  Will the DS help with sugar?

Thanks

Ellie