RSI/tendonitis question

Hi all.

I have had a case of RSI in my left wrist now for around 4 years. For the main part I have managed it by almost totally limiting activities that cause pain, namely typing and playing guitar.

Recently, I have started a course of physiotherapy to rebuild the strength in my wrist so I can attempt to up my levels of activity and herein lies my question:

I am comfortable with weights of around 1-1.5kg and am currently being asked to just undertake the eccentric phase of a wrist curl doing 3x15 reps, twice a day. When I attempt to do any of the above named activities, I get a mild pain (sometimes quite quickly) and so stop. Obviously, with respect to work (currently unemployed) this is quite a hinderance and I would like to get an idea of how long I can expect this rehab phase to last so I can get back to the things I enjoy.

I know it's a bit of a 'how long is a piece of string?' question but a rough idea would be great. Both my physio and I feel that so far the exercises have been beneficial and I already have a marked improvement in my grip but it seems the tendon issues is still lingering slightly.

It's very difficult to say how long it will take; I tend to tell people after 2-3 weeks of therapy that if they plot improvement from the beginning of treatment to present, then they can kind of extrapolate future points. If minimal progress is made then the progress curve will be slow to rise under current treatment;

I'm wondering if your pain is very near the wrist (carpal) bones; these many joint surfaces can be a source of pain as well; Regards.