AsNoriuanswered grow question 6 months ago give time, it looks like they dont grow sometimes, but they do ;) root system develops, plant will start to fly soon, especially after getting final bigger pots. be patient !
for future, dont use clear plastic containers, at least duck tape them with black tape or so. have drainage holles on bottom and a lot .
in soil dont overwater, small plants needs not a lot water, so if you saturated soil well, give 4-5 days before you water again, let roots get oxygen.
have fun !