it is abit challenging, i struggled abit myself with this one, I cant tell you exactly what you're doing wrong, but i dont think you need to get caught up on this, keep going, take a break from this one, try it again some other time, with enough trial and error eventually youll get it right, or if you dont want to progress until you get it right, maybe just take a breather, come back to it when you arent frustrated anymore so you can think more clearly.