Here is quick try at slowing it down, note I made sure foot pads not catching any heat.
https://youtube.com/shorts/xW0taX2rLiE?si=sUwGzollo0cvmJFg
That is quite impressive actually.
How long could you keep it idling like that?
I've actually thought about raising the base so that the original burner sits quite a bit lower but haven't done anything to try that experiment as yet.
A little water in the denatured alcohol could also go some ways toward cooling the flame.