How often you should do the stabilization exercises?

You can do your scapular stabilization exercises, along with your other strengthening exercises, 3 times a week. In between those days, you can do cardio and also incorporate rest days to allow your body to recover both mentally and physically.

Also, watch these.

https://www.facebook.com/healingthroughmovement1/videos/307267093211450/

https://www.facebook.com/healingthroughmovement1/videos/2148140955442036/