I'm pleased that he can go out and take a walk for more than 30 minutes now. It may not sound like much, and it isn't for a normal person, but I am happy for him that he can do for that long and saw improvements over the week. It must be helpful for his mental and emotional health as well as physical.
Please continue to pray for him and his family, as he also, no doubt, continues to pray for us all.
May the Lord continue to encourage us to read His word and enjoy His greatness no matter what the circumstances are.