Two weeks before harvest is a bit late to start but there s always time to do a good job! If you can try adding magnesium-sulfur to your feed, and some people even recommend adding it to your flush (I don't though!) The sulfur is used in terpene production. Then during your flush you can reduce your light schedule as much as possible something like 10/11 hours , that's because terpenes are highly volatile and the light degrades them. Before the chop you can give a dark period of 24hours for the same reason. Chop in the dark also. Then dry it as slowly as possible to preserve the terpenes. So... To make more terpenes add sulfur, and avoid the heat and the light. That's all that you can do brother! Hope this helps ! 🚀