Was there any specific exercises he had you do? I bicycle to work during non-winter, and I have a fairly standard resistance regimen, but nothing specific for my tendinitis. For the most part I'm doing pretty good, but I play games with different control schemes to avoid aggravating it, and every so often I have have to take a break from gaming completely, usually for two weeks, and I definitely feel clumsier than I should.
Remember kids, posture matters. And for the love of all that is holy, don't turn a game into a second job, no matter how much fun you're having!
First, if it is available to you and you can afford it, I strongly recommend finding a qualified physical trainer who specializes in tennis or rowing injuries. And find a highly recommended professional. Health care trainers and providers are not all equal and their are some who truly are
much better than others. Such a trainer is going to be very aware that not only do you want to heal, but also that you intend to keep using your hand in more athletic situations and may stress it even further. If they are experienced, they will be more cognizant of how much stronger your musculature needs to be so that the act of gaming lies way below the threshold of possible injury. If you are at a loss as to find one, call a local tennis/rowing club manager. Another option is to email/contact the coach of a nearby tennis or rowing team. Non sports occupational therapists may not be as familiar with the subtleties of musculature.
Second, I am glad that you are already aware of the necessitiy of good form, i.e. posture. As always, it's the large muscles that need to do most of the support work and being aware of your core is a great way to build awareness of how you are using your body. When I first started effective rehab I did tennis elbow excercises with extremely light weights, in fact a can of soup or lighter. I also strengthened my finger muscles using rubber bands and balls of varying resistance goop. I firmly believe that you want to avoid any pain medication unless absolutely necessary. It's one of the only indicators we have of gauging progress. And that is where the art is. It is my opinion that healthier musculature recovers quicker than compromised ones. If you are in substantially more pain the day after performing an exercise, reduce the weight by half or more or even stop. You may need to completely stop using your wrist because it needs to heal more. After more recovery, experiment with lighter weight and resume the exercises.... until you have no pain at all the following day. Then do the same weight with more frequency and/or repetitions. Yes, this may take months. I was on a can of soup
for a year. In addition, you do need to strengthen your
entire upper body. This means bicep/tricep, deltoid and shoulder work. Your muscles work as an entirety,
everything is connected. Once again, I stress that you should avoid all pain medication if possible. If you wish to reduce inflammation you might try ice. I also used wrist compression devices when I had to use my wrists or when I was at the gym doing upper/lower body training. Please remember this is only my experience and since I am not a health care professional my advice may not be for your situation or even appropriate!
Third, grease the bejesus out of your hotas if you are using a hotas. Nyogel 767a is a great dampening grease. Be sure to use disposable gloves when using it because it is hopelessly viscous and sticky. I use throttle and mouse. I have very small hands and most joysticks are built for larger hands. The mouse is very comfortable in comparison. In addition I can keep my entire forearm flat on my desk which reminds me to use my larger muscles for movement. If you do use a joystick you may wish to experiment with trying to have your entire forearm be parallel to your table. You may be able to elevate your forearm using books. This will force you, perhaps, to use more bicep/ tricep muscle.
Sorry for this wall of text, but tendinitis and overuse is so common and I very much empathize with those who are suffering from it.
Best wishes,
o7