pick pu a bag of any brand perilite at any of your local stores for like 2-3$ and just mix some more in to your soil. FFOF does have some in it, (i use ffof as well) but it wasnt enough for my liking, so i basically do 2/3 ffof and 1/3 perilite in my mix, it will add alot more drainage and allow the water to move better, but definitely add more drainage holes! Let the plant dry out a good bit, when you let it dry out the roots will stretch to try and find moisture. Remember, its a weed so it can take some beating and bounce back really well. Water, let it dry, water, not allowing the soil to dry out will lead to drowning it