It’s impossible to tell without knowing your diagnosis and without examining you what would be your best treatment. However, for many shoulder injuries that involve nerves, for example, non-surgical treatment, or conservative treatment, is preferred over surgery. The problem is that conservative treatment is slow and can be discouraging.
Usually, there is a time limit for your doctor to tell if the conservative treatment is working. In some cases it’s six months, in others it’s longer. There are drawbacks and complications associated with surgery so doctors don’t like to take that risk unless there is no other option.