You might also try wearing a soft pad on your elbow. There is one brand called a Heelbo if you want to look for more information. It slips on and pads the elbow so when you lean on something it is protected some. It is also great if you are a klutz like me and walk into stuff often.
In my opinion, it wouldn't do much more damage, I was asked to wait 4 months prior to surgery in an attempt to try more conservative treatment and suffered no dire consequences (my surgery did end up with poor results, but that wasn't because I waited). If you can't afford it, I wouldn't be overly concerned about it. Try splinting it at night and using pad as well as a NSAID (prescribed or over the counter, like Lodine, Ibuprofen, or Naproxen). Often these conservative are able to successfully reduce the symptoms and prevent the need for surgery or at least allow you to wait more comfortably.