Been there, done that, got the burnt pot to prove it. My first time making beans from scratch I walked away to fold laundry and came back to a kitchen full of smoke and beans glued to the bottom like cement. My husband still brings it up at every family dinner, which is just rude if you ask me. Now I set a timer on my phone every 20 minutes and I still get up to check anyway. That water line sneaks up on you faster than you'd think, especially once they start bubbling. Lesson learned the hard way, same as you.