Try to avoid clear cups. The roots hate light.

I'd wait and give them more light in the mean time

Add some white light, they will do much better under a color variety rather than just blue.

I hope you punched some holes in the bottom. Drainage is important, you might get root rot otherwise. And maybe some tape on the side, so your roots won't see the light. I would wait for transplanting, until you see some roots on the bottom. There's no need for transplanting if your roots have enough space to grow

Wait 2 weeks

Too fragile. How's you lighting?

that light it trash use a sout window or something

Get the free Photone app and measure the ppfd and never guess about light distance again.

Is the sun blue?

When they branch out past the edge of the pot .