Before, a friend who likes Chinese medicine told me a very useful method, that is, use the index finger and thumb of the right hand, put the index finger on it and put it in the mouth of the left hand, as shown below.

The index finger will touch a crack-like place, and then bend the joint top crack with the right thumb, as shown below.

Come once every once in a while, and the pain will be relieved a lot. You can try.