Hey there ! Great question : basically trichomes take an average of two weeks to make THC, so there's very little you can do it increase potency in the final days. What you can do is encourage the production of terpenes , that's that flavour as you know ! so to do that what you can do is decrease the light in the last few days (like three days or so) before the chop. because the terpenes are volitile, even light damages them. Careful too giving a too long dark period before the chop, anything more than 24hrs and it will mess with the trychomes! Other things you do are start watering with some mollasses diluted in water (for a sweet, aniseed flavour) or flush with a chelation agent like humic or amino acids for the last week of flush. beyond that it's just boulderdask more or less. In otherwords more terpenes more flavor, so anything you can do to reduce their deterioration or increase their production is what you're looking for. Hope this helps ! 🚀