Hi Paul. Actually, while the lump in my throat has gotten better, I am scheduled to meet with surgeons next month. My symptoms cannot be cured by diet or PPIs because they tell me I have non-acid reflux also which is only curable through surgery. Anyway, with that being said, I do notice that diet has definitely helped. Just like you said, one slip up and I get the heartburn pain or lump in my throat. But I have kept a journal of what foods make it worse. For example, fried foods are supposed to be bad but foods fried lightly in Olive Oil don't bother me but other fried foods do. I notice eating carbs with meals seems to help, like a baked potato or bread with my main meal. I have stopped altogether coffees and soda. I only drink Diet Decaf Green Tea. I am getting a second opinion from another GI even though the first one I went to is considered a God where I live in this type of problem.
As for the fatigue, while I don't have asthma or any other medical problems, I notice that the all day feeling of heartburn, lump, sore throat, etc. wear on me and that alone makes me tired sometimes. Instead of hard workouts, on those days, I just try to walk a little on my threadmill.
Good luck with your ENT. I hope the meds work for you but hang in there. I've been told that it can take a while for the symptoms to go away. I've had all the usual tests if you have any questions, endoscopy, barium swallow, 24 hour Ph, Manometry, gastric emptying.