Replying to Backside spin help

What up NS. So i started skiing park last year and have been slowly trying to teach myself some basic rail skills (with help from YT, friends, and here). Over the past few weeks, ive gotten so much more comfortable with my front 2s, and today I actually committed to trying my first few 4s ever, I got super close on the first 2, and landed the third one. I was hyped cuz it felt like my first ever "real" spin out of a rail, but also kind of confused/annoyed considering I still havent landed a single B2. I was wondering if anyone here could offer me some backside spin advice. I can actively pedal to switch on the majority of features, and am able to do unnatty (right) 3s, but I have no idea what I can do to make some progress on learning the b2. Any advice is greatly appreciated.