Check your run off ph. If you are not getting run off then there is 1 problem. 20 to 30 percent run off. Lower your ph to 6.2 range. Going in and coming out. Don't get leaves wet. Feed appropriate amounts for plant size. A new born can't eat a full course meal for a king. Good luck.
What soil are you using, and does it already have nutrients in it? .. because if you're also adding 2ml of biobizz grow at such a young age it might be overfeeding