Suggest Ways To Manage Forgetfulness And Memory Loss

I will turn 70 in a week or so, and is still working in a stressful job. If my health holds up I plan to retire at 77. Needless to say, I feel the pressure from the younger workers coming into the work force and change is happening around me every day. On several occasion within the past few months my Supervisor has asked why did I not make a scheduled meeting or return an important call that came to her attention to which I replied I forgot. Her response was that you ve given me that same answer to other questions. This really has me concerned. Memory loss is this job is not good. I started work in the federal service at age 43, and seven more years is starting to become a reach in more ways than one. Any advice for an old man with a young sprit?