Hi Sorry you're having problem with your vision at the moment. I was dx 14yrs ago and when I've had a relapse it has pretty much always given me double-vision or visual problems. Its blimming horrible !!! You don't appreciate your eyes until they don't work properly.
Like some of the other replies, I have recently had oral steroids to help with the problem and I have also worn a patch, but also.....
in the past when my double-vision has been constant and hasn't fluctuated, my orthoptist (eye lady) at the hospital has given me 'prisms' to put onto my glasses, which gives me the impression that my eyes are fine (obviously when I take off my glasses the double-vision is still there). This helps my eyes relax and also enables me to cope better and move around more easily.
Perhaps you could ask your MS nurse or specialist - If you don't wear glasses I don't know if its possible to provide you with frames aswell???
Don't worry that the time limit you have been given for improvement is coming close without any change, each time I have had the problem the length of time has varied greatly - from days to several months. I think you were given a ruff guide just to stop you from thinking you should recover quickly. It may have seemed a long time off when they suggested October, but I think it would have been wiser if you hadn't been given a time scale. Like any other symptom, no one really knows how long it will take to pass.
Try and stay posotive, and I know its easier to say, but try not to worry. Stress and worrying about it won't help you fix it.
Hope this has helped - Take care