question, I will harvest the plants, should I let them dry with the leaves and cut them after? It's true about better quality and trichone

Yes it is much better to leaves the leaves on and trim only once the flowers are dried. When drying, the moisture must escape from somewhere............much better to escape through the leaves rather than through the flowers! Yes it is easier to cut the leaves off while they are still green and soft, but for prime quality, drying with the leaves on is far superior.