The patreon has an option for free members, which makes up for 97% of the members. It pays roughly ~£25 - £30 a week, which in terms of hours at minimum wage is 2.36 hours a week (at most). Far less than what I'm putting into it. (~10, 15 hours a week. Depending on how busy work is.)
As for overestimating the release, i've stopped and instead adapted to talking about progress. And genuinely, I do apologise for not meeting those deadlines; shit happens. The project reached the point as of a few days ago where its ready to be tested again by the public for bugtesting, which those on the Discord have been doing.