Admitting failure to others is hard, admitting it to yourself is often even more challenging. I didn't want to believe it long after it was inevitable, but two weeks ago, I finally accepted that I wasn't going to be able to hit my deadline. The lost time during our move to Berlin and additional personal issues that began in June cost me over a month's worth of work-hours. So, I got in touch with my university asking for an extension and, in the process, got a lot more than I had bargained for.
Long story short, the original deadline set for me was August 4, 2020, according to the Chair of Professors it should have been November 1, 2020. Additionally to this "extension," I was also granted an additional four weeks, and thus my new deadline is December 1, 2020.
While I'm sure, I will be done long before that, I am delighted to have time to care about quality again. In the coming weeks, I plan to do an inventory of what happened so far and to come up with a plan.