Speaking as someone with a lot of neck and shoulder issues, I’ve learned the importance of focusing on one thing at a time/session. It takes time, and depending on what the underlying problem is it can take quite a long time to see improvement. I’ve adhesions in shoulder, lats, and t-spine (and a severe whiplash) that are very slow to respond to anything, probably due to how long they have been there. The take-home is that it can take longer than we might like to see consistent results, but the first thing is to identify what the problem is.