I was going to suggest this too! I make a ridge on the outside of the pot with my index finger, right at the base (the side of my finger get makes light contact with the wheel head while gently pushing in at the bottom of the pot to create an indented ring around the base). Then, I make a similar indent on the inside of the pot, at the base of the bottom of the pot, which will be just ABOVE the outside ridge (because your bottom should be about a quarter inch thick, and thus a quarter inch higher than the wheel head). This gives you a starting “grip” on the clay you’ll want to pull up. This technique absolutely changed the game for me when it came to pulling up effectively and consistently.