“No” is your friend in such scenarios. “Because I made it for me and I don’t need that” is your other friend if people are insistent. (A screenshot of the “fork” button on Github might be a third, rather muscly friend who doesn’t like to talk.)
I do understand the desire to be helpful but one should put themself first when it comes to fulfilling requests. Just in case anyone gets here and is similarly discouraged.
(Good job finishing the features you wanted!)