Actually allergies and LPR have many, many similar issues. In fact it's very difficult to differentiate the cause of many LPR type symptom. It's muddy water, indeed. That's the struggle I have, because I have severe allergies, and many of my symptoms mimic LPR, so my allergist is always searching for the cause, and never rules out reflux.
i had the same symptoms and had nissen 2010. it took 6 to 8 weeks and i got better, but my throat never healed and the throat clearing and pain were still there. the nissen for me helped 50%. then i started eating more fat and chocolate. had a job which had me eating later. now i eat bread soup such a bland diet. I hear you give it 2 months. i had post op 24 hour probe..have had 2. Not to scare you but i have had 2 scopes since my surgery and they say i have bile reflux. the gi doc believes the nissen caused the bile reflux. 24 hr impedance shows over 50 episodes of non acid reflux. i would say start the ppis if you stopped, get a 24 hour probe. its early so things still may calm down. if not get those tests. I am considering a redo but the dr. says my reflux is normal..which it is for standard gerd and not lpr. I had people question whether it were allergy related too and it isnt. seen 3 ents all cleared up the allergy question. it sounds to me like lpr..but im no dr. and am on here for help too.