I can still feel it and get it hard but it doesn't feel as sensitive/good as it used to. I'm not sure if its cause of excessive masturbation because that's pretty much all I've been doing while locked inside. Thank you!
Masturbation, even when it's very frequent, isn't something that will have an impact on your sensitivity in a physical sense, but if you find that you're masturbating the same way every time, changing up how you're masturbating or what sorts of sexual thoughts or fantasies you're engaging with might help. It's also the case that external factors like stress or medication changes can impact sexual response as well; have you had any big changes come up recently?