Chastity and orgasm denial discussion

For guys in long-term chastity, one frequent issue is losing the ability to delay orgasm indefinitely. Has anyone attempted these exercises to help prevent or even reverse that loss? I’m aware some partners like it when you cum early, and there are aids like straps, sleeves, and numbing creams with condoms to manage this. However, not all women appreciate those options since they can reduce spontaneity, making a more natural approach potentially valuable.