Brief Answer:
Try the tips below

Detailed Answer:
Hello dear, welcome to Ask a doctor's service.
I read your query and here is my advice.

You may need to try some tips to stop cracking knuckles.
Keep hands occupied using a stress ball or coin or any other stress relieving rubber toy or band.
When you start to experience the desire of cracking move from the activity you are doing.
Try using a rubber band over wrist.
Also treating anxiety can help you also treat cracking knuckles.

Hope I have answered the question.
Let me know if I can assist you further.

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