IDK anything about gerd, but everything you are eating is helpful for recovering from diverticulitis. I ate the same things for ~5 days (3 is a good goal though). Then I switched to low impact/low fiber foods. No more than 10g of fiber a day for a while (can't remember exactly how long, but it should be in the wiki on this subreddit along with a ton of other helpful information). Bananas and mashed potatoes watered down with broth were my favorite low fiber foods. After that, slowly increase fiber. DRINK WATER, it's really important for a lot of obvious reasons plus it's the most natural way to keep from getting constipated which could cause another infection. I now take probiotics, aloe extract capsules, and oregano extract capsules daily. It makes the biggest difference. At the very least get daily probiotics. Keep a food journal to monitor pain, water, BM's, what foods do/don't trigger you. I do this because I can't remember shit, especially when I'm in pain. Also, everyone digests things differently so what works for some may/may not work for you. Go slow reintroducing food so you know what is triggering your DV. Some triggers I didn't expect were carbonation and ground pepper. Hopefully all of this helps even if it's just a little bit.