i have read soapy water helps. i hear folks add it to there insecticides as a sticking agent. i use safer brand caterpillar killer=8$ and i use neem oil extract that is also a 3n1=11$. now i started late! and im losing colas!spray paint can sized colas!! jerks!lmao i will buy stock in these items from now on.
just a thought,but as the plant uses the nutrients in your soil it will begin to use the stored food in its leaves,starting with the oldest leaves.im in much bigger pots,but mine did samething.1 strain is worse than others,but i add a strong dose of "nitrogen" with my bloom every couple of feedings.it helped my space jill,but 1 strain is just this way!oldest leaves yellow off.i hope this helps. im not saying give them a strong dose of anything,just tellin ya about my personll findings in my garden.may be similar! another note,i use mg tomato food to add nitrogen to my feedings.may just be sayn wants a lil food.