I also started this seed at the glass of water and a few days after I put her on paper to finish the germination process and went to the soil of bio bizz light mix.
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