Help with my dying hulkberry

overwatering doesn't cause what i see in these pics, so you can rule that out. inspect more closely.. look at the discolored spots and check for white to grey fuzz underneath along stems or any gooey/mushsy bits. usually you can start to smell something that doesn't quite fite the normal/expected smells too. Can rule out infection then all that is left is what you are pouring into the substrate. if your substrate has good drainage qualities, overwatering is nearly impossible. too frequent watering is just a matter of self-control. wait for top layer to dry and repeat. don't keep it sopping wet all the time. common sense on that...

Has it been 8 weeks since you flipped to flower or 8 weeks total since it started growing? Have you checked tricomes to see how close you are to harvest? Plants will start to die off toward the end. Are you having any issues with high temps or is your light to close? See any signs of burnt leaves, pistils, etc that would indicate light or heat stress? Best of luck.