If you have room feel free to put more soil on top, my grow had root activity above the soil for many many weeks and i didnt see any unhealthy looking roots after breaking the soil. Otherwise you could transplant to a larger container if you're not planning on flipping for a few weeks.
You could also add in some things known to make happy roots like mycorrhizal fungi to help ensure a happy root zone.
The plant looks happy and healthy, good luck with the rest of the journey. ✌️