I was going to grind more runs. In fact, I have done several more runs over the past four days since I achieved this PB. Still, even though I changed some routes and used some skips, I couldn't surpass this time for some reason or another (the closest was a 22m one). I feel like, mechanically at least, I am reaching a limit and I've officially hit burnout too. So I'm just going to submit the run and leave the speedrun for some other time. Sub-22 is already way more than I ever expected to achieve.