I practice like 30 mins per day and 1 hour and 30 mins in a good day, Im sub 15, I started cubing at february of 2025 and stopped at like after 1 and 1 half month, I was doing like 30 seconds there with beginner f2l and beginners method and I came back to practicing cfop at november of 2025, I practiced cfop and I was lowk dumb cuz I practiced it as like alphabetical meaning I started learning A perms to z, the january phase was my phase of prime because I became like sub 16 there really fast and I quit again at February to june, I started again like 4 weeks ago and Im struggling to get to sub 13 below, any tips?, I already know all cfop except on nb perm and z perm