Sleeve to bypass revision

I had gastric sleeve surgery 5/20/14, weighed in at 250 and was very successful. I lost 75 pounds, felt great, stuck to most of the rules and had a new start on life at 44 years old. Now, 3 years later, my acid reflux is back in full swing with regurgitation waking me up from sleep. I got to my bariatric surgeon who does an Endoscopy and finds a hiatal hernia. After all the success I thought I enjoyed, I am scheduled for a hernia repair and revision to bypass. It's been a whirlwind. The surgeon said regurgitation is dangerous and I have it often enough that it's a serious concern. I am a bit miserable from the reflux. I was advised that with my severe GERD before surgery I should never have been allowed the sleeve. I am scheduled for bypass and repair on Nov. 1. I am nervous. I never wanted the bypass because I hear of so many complications with ulcers and deficiencies. Does anyone have first hand knowledge of this conversion or are you more than 8 years post op bypass and can offer any words of wisdom?