Worried about the 3-year inburgering deadline while working part-time

Hi everyone! I got my letter from DUO — I have 3 years for inburgering, and honestly the deadline stresses me more than the exams themselves. I work part-time and go to my Dutch course two evenings a week, so progress is slower than I hoped.

I found the page about extra time on inburgeren.nl (https://www.inburgeren.nl/extra-tijd/). If I understood it right, under the 2021 law you can get 6 extra months if your term started at least 2.5 years ago, you already passed at least 2 of the 4 language exams at the level in your plan, KNM, PVT and MAP are done, and you followed your course hours. Did anyone here actually apply for this through DUO? How long did the answer take, and was it complicated?

Also a practical question: I read that after you register it can take more than 6 weeks before you can sit an exam. So when you planned your exams, did you count backwards from the deadline with a big buffer? Or just take them one by one when you felt ready?

Sorry for so many questions. Mostly I want to hear that people manage this while working. Any experience is welcome!