hi, thank you for providing a brief history of you. since you told you were able to learn walking again with exercise I will recommend you to try the physical therapist again. with the advancement of new research and new inputs the patients now receive the best rehabilitation plans. with the new physcial therapy advancement you can achieve back your independecy. I have seen a case of Ataxia when he was 70 and now with prolong exercise and regular modification and assessment he is able to be independent again. ofcourse the patient has put a lot of effort to regain back his independency. I highly appreciate his effort to get back to action at this age. also to mention that you are also close to 60 which will be tough to fight. but if the fighting attitude gets a boost it will make you independent again. Ageing is the drawback for any exercise and most medicine to function at times l. since the bodys metabolism and immune system becomes weak and until the self effort comes things becomes difficult. learning the through exercises if balance , coordination, strength conditioning, eye exercises, etc will help you. but the effort need to be high. with the grace of God I wish you a good health.