An what's now your argument against my "see a doctor who examine you for the cause, we don't know" because the abilities of a physio are very limited and same symptoms can have different roots even somebody do same kind of sports? Some things won't cure with just some exercise and who said that he has exactly what you had?
Here is my experience: I usually play 2 hard and 1 fun game every weeks. When I moved to AX88S, I had little pain in elbow too. I also search in the forum and there are several possible reasons. So I went for a very light racket (actually the lightest in the world, Apacs feather weight 55: 58g) but I still had the pain. The causes for tennis elbow include: stiff racket, too much strain and small grip. So I changed: put more grip (2-3 over grips, probably G2 or G3 now), learn to relax the hand and arm between strokes, wear elbow support and play less (both racket are stiff so no change in that). Eventually the pain has gone since. Now I still can play with AX88s. I have sold the Apacs because I thought it vibrates much. So you can try one by one or all what I did at the same time (recommended). Hope this help.
Already stated beforehand in my earlier posts. I would not dismiss the abilities of a specialised sports physio so lightly.
You won, if you don't understand that abilities (by law) of a sports physio in HK aren't the same compared to Europe. We have tough restrictions and a sports physio is withhold from many things to do which are exclusive allowed for doctors. I never dismissed a sports physio therapy, but to get the same treatment like you (which is a decision of a doctor), seeing a doctor is the first step here.
Both goes hand in hand. If you are not allowed to do things by law (diagnostic which is the crucial and most important for any treatment) you maybe won't get educated in it, very well. And even if you know, you are not allowed to do. Jesus Christ! Got you examined? Yes/No? Do you get a diagnosis? Yes/No? So we discuss here about an advice to OP. In your country legal for sportsphysio- here not. I advice the legal way to get the same if needed and you don't agree? That don't make sense. I really don't get what offends you by seeing a doctor. https://www.badmintoncentral.com/forums/index.php?threads/injuries-forum-disclaimer.68631/
I would focus on 3 points: - Lower your string tension, use a repulsive string and avoid plastic shuttles. - Get a flexible racket / neutral or headlight balance 3U or 4U but not any lighter. - warm up properly and reduce the length of your training session. Don't stop playing, instead play 3 times a week for an hour only during 2 weeks. Then 1h30 for another 2 weeks and so on. - additional tips! (It's just too obvious hehe) Work on your overhead technique and watch out with backhands... not having the technique and trying to clear baseline to baseline on backhand strokes is a recipe for tendonitis or elbow racket syndrome. Especially when doing backhand drills for hours during weeks... (learnt my lesson the hard way) Drink plenty of water. Stop using your smartphone at night in bed it's one awful position to hold for the elbow. That's my opinion based on my experience only and it does not replace medical advice which you already sought. Good luck and update us .