I have been masterbating for about three years and over the last few weeks I have noticed that my penis is a lot less sensitive and my orgasms are not as good as they used to be. If my penis is not as sensitive as it used to be will it become more sensitive again (I am decreasing the amount I masterbate to see if it works). I usually masterbate once a day.
Yes that would probably work.
usually decreasing the amount will work to an extent, but may not fully restore the sensitivity. You could try using something like ky-jelly as it would keep the "tip" moist... I find that usually works for me.