As someone who is also back to college, as well as who has spent a lot of time working on adopting the ideal that is like "as long as your mental health is good and you feel like you can keep going", I'm glad that you can still be proud of yourself even if you feel like you haven't contributed as much as you may have wanted to originally. People who love the project will still be here no matter how long, so take your time and I look forward to the future!