Calisthenics Transition

I want to learn how to transition between calisthenics moves by catching the bar with my knees. I've tried this two times before, but I always quit because of the fear in my head and my lack of motivation.
After watching these lessons I'm motivated more and I want to go and see what I make out of it this time.
My goal is to do this transition on the high bar, at least two times in a row.
Edit 23-09-2019
After almost 7 months, I finally learned this skill! I had some ups and downs, documented it all in this Video. Like Mike Boyd always does.