cloning question

i have six willie nelsons vegging right now. im keeping the two that i have topped as mothers and moving the rest to flower. however, i want to take clones from the 4 i'm about to flower first, but if i do that, should i wait to put them into flower? if so, how long?

...take you a clone from each plant's top. Your ladies will split or "Y" where you took your cutting and give you 2 colas per plant. Put them into flower a week or later after you take your cuttings.

at least a week? thanks.