First time transplanting - some questions

Hi there , my plants are 2 weeks and im moving them now to a stronger soil from a 0,5 lts. to a 7 lts pot .

Should i make this with the soil wet , dry or both ways work ? Should i water it in the end of the process ? Is there any risk that
when i take them from the pot the earth could cramble if theres not enough roots ? thank you

I find it easier to let the root ball dry out just enough to ensure it is one solid mass. Do it when the plants are just about ready to be watered. Yes if it crumbles on you just try to keep the roots as intact as possible, even if some roots get a little ripped up the plants recover quickly.