Artie - its the journey, not the destination!
How much as your h's diet changed? Are you guys eating the same stuff? I have bread in the house for like half the week - i get it delivered, eat it all up, then go without for the rest of the week!
Your walking will serve you well. Also have you heard of, fill half your plate with veg, quarter with starch, quarter with protein.
Chef AJ is someone who has gone completely overboard IMO, but she is skinny, almost alarmingly so. She advocates all veg, a smidgen of starch. I feel like her when i am eating a big salad!