You can learn this if you take an step-by-step approach
Behind-the-back weaves (often condensed to BTB weaves) often feel like big milestones on the journey to poi mastery. One of the tricks to learning these patterns is to understand that a backward BTB weave actually works like a forward weave in front.
The other tip is simply to practice the lead-ups. If you jump ahead and just try to do the BTB weave too soon, you’ll spend a LOT of time smacking yourself with the poi!