You're doing great. What helped me quit when I was a teenager was to always know where my nail clippers were, and have fast access to them. So whenever I had an urge due to an uneven nail edge, I'd just smooth it out with clippers or a nail file. Really made it simple to quit.
I used to do it, what helped me break it was keeping a rubber band on my wrist and every time id bite, id snap my self with the rubber band, took ~1.5 weeks for me to stop
What helped me quit was a manicure. Spending $40+ on my nails helped me not want to bite them. By the time the gel chipped off, I broke the habit, so I didn’t go back. I still pick off hangnails and the uneven structure, but having a file next to my desk at all times helps with that. I also have a cheat nail where I mess it up if I need to.