Welcome to HCM
We understand your concerns
People tend to be sluggish and lazy often after some days of busy schedule and after that lazyness they normally work hard fearing psychological impact. Same things happened to you. You are health conscious. You are worried that sitting idle will result in some diseases. You are right.
Body needs exercise. Without exercise and without proper diet, weight will increase for sure. Rigorous exercise and diet will decrease weight slowly. 10 lbs weight loss
per month is clearly what you can have while keeping your health intact.
Be happy with what you are doing. You can't do everything for health.