Yeah, I just read up on it and you sound spot on. Too much will break your brain! Blog I looked at said no more than six leaves, and that sounds like A LOT, probably, but I guess he meant as a total maximum. Or his leaves are smaller than ours. Or that is just the right amount, but I'd err on the side of ... just the very least amount. Or not do it at all and continue to appreciate the pretty blue flowers.