To be really honest I would just keep doing what you are doing if they are looking good. We are all happy to give advice but your plants are the best indicator of whether you should do something different. No drooping/spots/burned tips/strange growth etc so you are golden. Watch them and if you do see anything odd that will be the time to change things up. My only warning is that some problems come on slow and some very fast (eg bugs and mold) so do keep an eye on them. Treat them like a car rental and give them a detailed walk around every day or two.
Edit - remembered you are within a few weeks of harvest - just a bit of additional bit of advice given how far along you are. First, make sure your nutrients have a growth mix and a bloom mix. In bloom you need a lot less nitrogen. If you feed them a mix for the growth part of the cycle it can impact how well your bud grows. If your nutes are specific to cannabis they should make clear the formulation for growth vs bloom. If your nutes are not specific to cannabis then you may want to explore a nute designed for the bloom part of the cycle. Second, watch your bud closely, in particular for bugs or for bud rot caused most often from damp/humid weather. If you see bud turning brown, dying sugar leaves or white fuzz in your bud you have a problem that needs pretty quick attention. Same goes for white powder mold on leaves and many types of bugs. Finally, if you are going by the seed producers information regarding your harvest window take it with a grain of salt - it is more likely an additional couple weeks, although again, your plants will tell you when they are ready, don’t count on the calendar to be right.