I could probably improve on that even more by using a pressure cooker. (I’m stalling on buying one because I boycott InstantPot due to the fact that they have a closed source phone app exclusively in Google Playstore; it’s optional but InstantPot buyers are still financing that. I should probably get a 2nd hand manual pressure cooker).
FYI, new manual pressure cookers are still a thing. A recently-made used one is fine, and obviously best in terms of minimizing cost and manufacturing and such, but it's better to resort to buying new than to get a really old one with a less-safe design.
Electronic pressure cookers made by companies other than Instant Pot are a thing too, by the way.
Which is one reason I like the electronic pressure cookers: I can set the pressure cooker outside.
Another way to accomplish that would be to get a portable induction burner and set a manual pressure cooker on top of it.