I had it very bad, could not even lift a gallon of milk. I went thru a series of shats and treatments, nothing helped.
Doctor started me doing some stretching exercises. It worked! Mine went away and has been gone for years.
Exercise for elbow: put your hand palm down on a flat wall, the edge of a table etc. Push so your palm and fingers bend slightly back over your arm towards your elbow. It does not have to be a strain, just put pressure on it, so the muscle in your arm is stretched. I did this several time a day, even while driving on business. I pushed it back against the ceiling of the car or against the side of my chin. After just a few weeks it got better. I still some of the stretching to kepp it from coming back. It has been about 4-5 years since I have had any trouble and I shoot almost every day.