It is flared right now.
I have a hyatal hernia that causes it. To treat that I take a tall (quart) glass of warmed water, and mixed in is the juice of a lemon and a bit of honey or stevia leaf.
The water is warmed to relax the stomach. The volume is high (quart) to weight the stomach. It is taken upon rising in the morning when the stomach will be more relaxed.
Then I do heel drops. I personally though not needed, I stand in a door frame and grab the top with my hands and look skyward. Raise up on my toes. Drop down quickly to my heels. One can also raise oneself just off of a seat and sit down hard enough to allow the weighted stomach to pull itself from within the lower esophageal
sphincter, retracting the part involved in the herniation or protrusion through it.
when it eventually pulls down, sometimes after ten to fifteen heel drops, I often hear/feel a squishy gurgle and may experience some belching of gas.
I’d try this for a few days. There is also a maneuver or manipulation from up under the ribs that a chiropractor or D.O. Can do but as I understand it isn’t very comfortable.
also noteworthy, reflux can be from food items that serve to relax the esophageal sphincter (tobacco, chocolate, alcohol), or incomplete digestion due to lack of adequate hcl or other digestive issues. For the former, avoid those food items. For the latter a test can be done to verify, by taking apple cider vinegar in water in spaced intervals and small amounts, to see if it helps close the sphincter. It is closed by the presence of a gas made during the completion of digestion in the stomach. Short of that gas signal, the valve may leak in some conditions like bent over straining.
something that may help is sipping regularly from a dromedary during your rides.
Best wishes. I used to battle this often. Dietary changes, and the heel drops helped. Turned out I had celiac disease causing my digestive weakness leading to mine. I keep it in check with certain food avoidances most of the time. Lately it has flared from what skeeter syndrome does to me.