Wet it with a pump sprayer
For easier scraping and practically no dust during popcorn ceiling removal, use a garden pump sprayer to mist the ceiling and let it soak in for about 15 minutes before scraping. Only give it a light misting—too much water could damage the drywall or loosen the joint tape.
Here’s a tutorial for you. https://www.google.com/amp/s/amp.insider.com/popcorn-ceilings-home-outdated-diy-renovation-improvement-2019-3
its on my to do list too!
My popcorn ceilings were sprayed Gunite and could not be scraped, period.
I filled some of them in with drywall spackling compound which was a lot of neck-breaking work.
I hired the remaining areas to be done professionally at about $400 a bedroom.
I agree with Dee and there are some tutorials on YouTube.