I'm wondering whether heat was my issue too in retrospect. I had very similar symptoms to you Mellow. My plant has since made a remarkable recovery and all I did was make a small tweak to my feeding schedule. I did however go from a couple of weeks of very hot weather to a week of cooler weather and rain.
Dont flush your soil.... I am pretty sure it's a simple case of under watering and the medium getting to hot . That's a big plant for a smallish fabric pot so will be sucking up the water and in the hot African sun more than likely the roots are overheating as well
Maybe to be on the safe side.. flush your medium properly and add fresh nutrients. When my leaves fall off they are NOT yellow. see below pics
btw nice bushy girls man!
Right is week 6 flowering & left is week 1 flowering
My leaves kinda turn dull dry out and fall off.
How often do you water this lady ? How dry is it before you water ? Your plant should not be dropping so many leaves at 4 weeks , it is eating itself to form buds and is not normal at this stage . How hot does that pot get in the sun?
This goes mostly out to my fellow growers out there but it isn't a bad idea to have this document in your home where you consume in private either.
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