This is overwatering, right?

bottom feeding often leads to zones of high nuitrient concentration nar the top of the pot -- where the water soaks into and ebbs/flows from there over time, which continually deposites more nutes that go back into solution when it gets wet again. bottom feeding can be dangerous. you have to figure out ways to mitigate this effect to do it properly. plenty of people do it successfully. if plants are droopy immediately following a watering that may simply be due to what constitutes your substrate. A proper air:water mixture capacity of the pot will virtually eliminate the possibility from ocuring unless you dump water through it for 10minutes nonstop, lol. if sphagnum peat moss or basic soil is a base, you want 50% drainage amendments like perlite, pumice, vermiculite et al. In coco coir you only need 33% becaues ti holds less water per volume. In the end both of these suggestions will hold roughly the same water per pot volume with these ratios of drainage amendments. that's no accident and excactly why the ratios are different depending on water holding capacity of the substrate type used. wait a bit longer between irrigations and see if that fixes it. I think that will fix the mottling you see on more of the lower and mid level leaves. Make sure your leaves don't continue to get darker as they seem quite lush already. they are either well-fed or slightly overfed, but if that's the case only a small adjustment will be needed to fix. See what the chang of watering habit brings over next week or two and if possible hold off on any nute adjustments until you see what progresses from 1 change at a time. I'd also wager with a better composed substrate (if not near the ratios give above for perlite et al), your current methods of watering wouldn't cause any droop. it's really hard to overwater a plant when the substrate is composed properly. you'll get faster growth too.

i would worry about overfeeding and nitrogen toxicity. think you feed constantly, review diet.