So, a few months ago I agreed to rewrite a previous employer's OAuth app -- paid work, ofc, if below my usual rate. It's a rewrite because the project is so deprecated and fragile that upgrading it is likely much more difficult.

however, I drastically overestimated how much free time I would have. I thought I could shave off an hour a day to spend on it, and get the project done in a few weeks. However, it turns out I barely have twenty minutes a day to myself, and it's only after I'm mentally exhausted from the day's efforts.

I don't think I'm capable of completing the project given the demands on my time -- even if it's relatively straightforward to do.

I don't want to tell them no, especially after waiting on me for this. but I don't think I have a choice.

I feel terrible.