it might not even start popping till 3+ minutes.
Sure. The first time you make popcorn, hang out until you know roughly how long it takes. The 3 sec rule works on pretty much anything though.
Once you know the rough timeline, then set it to just a little longer (10-20 sec) and then you can go to the restroom or something while waiting (or prep other snacks). Then youβll never have to worry about burning popcorn.