Thanks for the nice comments everyone! Hopefully I can try again with a bit longer time in the coming days or weeks.
Chris, I went through a painstakingly long workflow in Pixinsight thanks to a recent
tutorial by Bray Falls. It worked for me, but takes ages to apply star removal to every single sub.
Gary, I rather accidentally did a mix of 1 minute and 2 minute subs. The one minute subs were supposed to be tests, but they looked quite nice, so I threw them in!