Most definately can do this!! I can't see from my phone how far along you are but my lactation consultant said from 35weeks is fine to do so.
We knew our son would be born with a cleft lip and most probably palate and wouldn't be able to breastfeed. So I had a freezer full of syringes of colostrum and took them with us to hossy when in labour!
Did not affect my supply at all and if anything helped my milk come in on day 3 as we kept hand expressing once he was born :-)