Hi dfward , first of all can I say how sorry I am to hear of your strokes and your disability. It is difficult to know what to eat and when and how much when you are not burning it off with excersise . Your metobolic rate may be slower too .
I am also disabled and live alone , also unable to do excersise but can walk short distances .I have the opposite problem and am losing weight so I feel unable to offer you any advise as such. Maybe your occupational therapist or your GP can help if you talk to them. All the best. :-) x