Root popping out of jiffy pellet

Hi everyone,

Today when watering, I noticed a root coming out of the jiffy pellet. It’s been 5 days from Planting seed(GG auto). Was advised to wait 10 days or more, or when third set of leafs are the same length as the second set to transplant to 5 gallon. Should I wait or transplant?
Thanks for your help

I would transplant it. As soon as I see roots I move em to their bigger pots