5:08 AM, Tuesday May 31st 2022
The entire point of this exercise (and ultimately DaB in general really) IS to improve your spacial reasoning. You're not expected to come into course with it already formed. It'd be like working out and building muscle in preparation for going to the gym. So don't worry that you can't get it perfectly.
Converging in pairs is a mistake I make a lot too. I think the problem is when planning out a line, you may accidentally focus too much on how it convergences with the other line on the same plane and not give the same amount of thought to the other lines it also converges with.