CAN YOU HELP?(CUTTINGS)

HI
This is my first grow for about 5 years and i am very rusty.
i tried cuttings before without any joy.
i got 5 fem blueberry seeds and my mate started them for me but only 2 have come through. my fault not his(these 2 are lovely looking ladies)
MY PROBLEM.
I need to take cuttings and would likr to finish with 9 plants for the next grow but i am worried that i will take to much from the 2 i have left
SO ANY IDEAS ON WHERE TO TAKE THE CUTTINGS FROM WITHOUT TO MUCH DISRUPTION TO THE MOTHERS.
top,middle or bottom so to speak.
AND HOW MANY SHOULD I TAKE ?
THANKS FOR ANY ADVICE.
CHEERS
DRAGONBUD:rasta: