I do walk around 1.5 hours a day, it definitely helps !
If you are really hungry but you think you should stop I recommend 1-2 portion of grapes. They do have calories but it fills you its also healthy .
I love them, its also said it helps to lose weight. I cant comment on that thought, but I did lose weight walking. Its not stressful , its enjoy able. Just take your dog for a walk, or take your camera and take pictures meawhile like I do. Very enjoyable !:)
Eat lots of protein and fiber, especially, for your evening meal, if it's after that, that you get hungry.
Also, make sure you're really hungry, when you get that urge to eat, in the evening. Sometimes, we "hungry" because we're bored, thirsty, lonely, etc. It's real easy to sit in front of the TV and snack, so if you're going to eat in the evening, after dinner, make yourself get up from in front of the TV and sit at the table, with plate and silverware.
I understand that exercise would be difficult for you, but it's really necessary, because exercise builds muscle and muscle burns fat. Instead of trying anything strenuous, try yoga or walking. A brisk, 30 minute walk every day is great exercise.