Sons foot fetish

Hey guys! need advice and quick! Seen a thread on here about a son taking photos of feet and seen some good answers. My son admitted to me that he once used to fantasise about my feet, come into my room while I was asleep and feel them, put heels on me and play away. Problem is, I never really stopped him in the past and now he’s older but he still loves my feet. I’ve caught him staring glancing at my feet when I’ve been chatting to him. He’s been drunk and confessed it all, even taking photos. I don’t know what to do, like I said he’s older now and he’s going through a lot in his head so I don’t know how I can help him. Thanks!