This really shows how much stamina matters in this exam.
When you tend to give your maximum in the quant you would be pretty tired and verbal is affected.
Don't know how to build it other than giving more tests etc.
One idea could be to sit for 2.5 hours on weekdays giving one of the following
- Two Quant Sections Back to Back
- Quant + IR section Back to Back.
- Quant + Verbal Back to Back
The question is not can you rise up to iconic! The real question is will you ?