@jbreyes777 One thing to remember is that tendon remodeling takes a long time - Like, months. So if you make a change and feel pain free in a week or two, don't immediately go back to normal.
Commit to a period of at least say 8 weeks (possibly longer), where your goal is experience no / extremely minimal tendon discomfort.
The slow eccentrics are great, I'd also recommend slow concentric contractions as well to reduce the force on the tendons. If you are say pressing a 50 lb dumbell, and you move it back up very quickly, you are producing much more than 50 lbs of force, vs if you to a 3 second contraction, you are much closer to 50 lbs total.
The added benefit of a slow eccentric AND concentric is you will still get a good workout with much lighter weights.
Start very light, slowly increase the weights. If you experience prolonged discomfort in the tendon (anything that lasts for more than a minute or so after the set), back off.
After 8 weeks, if you are seeing improvements, I'd start speeding up your reps - not all at once, but gradually, and monitoring for any discomfort.
Another thing is sometimes you can't reach to full ROM that you really want to reach.
I had to limit my barbell overhead presses to stopping around my adams apple instead of touching my clavicle, I had to modify my dips so my torso is a bit less vertical, and I had to stop my close grip bench presses an inch or so above my chest / sternum.
It felt really wrong to "not do a full rep, bro", and I know emphasizing full ROM is really popular right now for hypertrophy, but you're going to miss out on a lot more hypertrophy when you can't do some lifts at all vs cutting out the last half inch of ROM.
Finally, I've had a lot of success with cross friction massage :
Manually and with a massage gun with a paddle bit.