Hey Max, sound like you are doing really well!
I have been stuck in a three month relapse cycle for about 4 years now, since I properly tried to quit. It's been really hared but I feel like it has led me to this point, where I have the knowledge and tools I need to make it permanent. Part of that is making some big life changes at the moment but getting past that 3 month is crucial. Don't take your eye off the ball, it can hit you from nowhere.