My 2 babies with 40 days look stunt, since day 37,...

First of all, instead of putting in a link, you can automatically link your question with a diary by opening up the diary and going down below your weekly comment (which in this case doesn't actually exist but...) you'll see a place where you can ask a question and it is then linked so we can access the diary quickly. That being said, I think you're massively overfeeding these ladies... you've got signs of nitrogen toxicity and/or overwatering (which you admitted you had done)... but I'm wondering if you let her dry out completely before giving her anything more... you've got to let your plants dry out between waterings/feedings... Your pH is a little high as well... I'd get that down to 6.0-6.3 so you don't run into calcium or magnesium deficiency issues.. Let her dry out. Completely. When you lift the pot you should say "WHOA!! There's nothing to her at all!!!" ... Good luck!