Bottle

So my baby is 5 weeks. I go back to work after thanksgiving. I only work part time so my baby will only need to eat once maybe twice while away. I have been trying different bottles, medela, latch, mam, avent, playtex like breast nipple, nuk. I can't seem to get her to even suck from them. Any ideas on how to get her to eat from one. I have just been trying an ounce here and there just to get her kinda used to it, but like I said she won't even suck.