When your hands are tied

There is something wrong, but I have the feeling he just wants to be left alone. Let him come to your house as he likes. May be he is not feeling well.

Cats are mysterious..Peppie does not seem to be doing well on health front. Anyways, you have done the best that you could do for him and you are still doing it. You could get him checked to a vet only if he allowed you to catch him.

Peppie sounds like he’s going through something deep—physically, emotionally, or maybe both. Cats are mysterious that way. When they're sick or in pain, they often hide it, even from the people they trust most. His sudden weight loss, avoiding food, and not letting you near could all be signs that he’s unwell. You might want to consult a vet to understand what's going on, as that's always an option. Sometimes, animals sense when the end is near and quietly withdraw. It’s a tough reality to face, but it’s nature’s way, and perhaps Peppie is following that instinct. However, the fact that he still comes home, even for a little while, shows that he still knows where love resides. What you’ve done for him over the past six years is truly remarkable. You’ve provided him with a home, safety, and unwavering love. That doesn’t go unnoticed—not by us, and definitely not by Peppie. No matter what’s going on, you never gave up. You gave him your all.

Sorry you can't get him to eat. Maybe soon

If he won't come close there's nothing much you can do.

Sometimes cats act in ways we can’t fully understand, but your love and effort have never gone unnoticed. I hope, he finds his way back to you soon, safe and well.