Stopping breastfeeding/pumping

Hi ladies! My baby is 2 weeks old and from day 1 she did not take to breastfeeding... wouldn’t latch and I was so bruised and blistered. I switched to pumping and she takes a bottle just fine. I am only getting about an ounce at each pump, and so supplementing with formula. Pumping is becoming exhausting and my husband and I discussed it and would like to switch to formula feeding only. How do I safely stop pumping? I don’t want to be in a ton of pain if I do it incorrectly....