I’m lagging in Quant. My current strategy is to watch all the concept videos of a chapter at once (around 7–8 parts) and then start solving questions. But when I try the questions, I’m unable to solve them and feel like I’ve just memorized formulas without understanding. I think a better approach would be to watch 1–2 parts and then immediately practice questions from that concept. Is this the right strategy, or should I follow a different approach?