The limits of rebuilding Napoleon's navy

What could an adviser to Napoleon do from 1801 to improve the French navy before Trafalgar?

Increase sea time, training, and ship numbers, though the French system makes success before 1805 unlikely.

An adviser to Napoleon in 1801 would need to secure more time at sea, more training, and more ships. Those changes would still have to pass through the existing French system. Success before 1805 is judged unlikely. Better advice alone would not remove the institutional obstacles.