3 rd week can't stop burping

Started Reta 3 weeks ago. Went from 1mg to 2mg this week. I literally had to force myself to eat today. I don't know how anyone hits there daily protein goals on this. I have to consume 200 grams a day to maintain muscle. Anyway, I've been burping evru 5 to 10 minutes. Is this normal? Does it go away? Any suggestions on how to stop it?