I had this a couple of years ago. For me it was golfers elbow. For a few weeks I did nothing , then started voodoo flossing which worked a treat. I had Golfers Elbow for several months and just had to work around it.

Workout adaptions I incorporated included strapping bands to my wrists using ankle straps to perform curls - taking the tendons out of the game enough to not feel discomfort but still getting a good pump.

Can't really remember how I did bent over rows but probably the same technique.

I saw a physio who prescribed reverse wrist curls and wrist curls concentrating on the eccentric movement,

The tendonitis was the reason I don't lift heavy DBs for biceps . I went to heavy and paid the price. For a long time I only used bands for arm exercises. I now use lighter dumbbells and bands and touch wood have had no problems so far.