Maybe magnetic therapy can help. Here is a link. Personaly I haven't try this device, so I cannot recommend it. But you can still try it out.
I am a longterm sufferer of this issue and for me it is all related to golf.
Getting physically stronger has helped me but too much practice and it comes back quickly. Practice matts in particular are a killer for it and I try to avoid them as much as I can.
A theraband flex bar is worth getting. Plenty of youtube videos of demos on how to use the bar.
An over the top move followed by a chicken wing can lead to tennis elbow too, check the mechanics of the swing. If they are wrong and aren't fixed the tennis elbow can return after treatment
I have had tennis elbow in the past found this when other methods failed and have had no issues since.
Takes a week or two to come around but well worth following for a few weeks.