Question on pumping colostrum

Ivy • 23💕 Mommy of Anastasia and Aniyah 👣 👣 Due with #3 • July 15, 2023

I’m wanting to pump colostrum before I have my baby because with my other 2 pregnancies my milk immediately came in and I didn’t get to keep a lot of colostrum.

How often should I pump it?

And will it effect my supply at all once the baby gets here?

Any tips?