Breastfeeding help please

Taylor

We’re having a problem where my baby will latch well about sometimes after a minute or so she will unlatch and even with the nipple completely in her mouth she will not re-latch she starts shaking her head and crying. I nurse as well as pump to mix with formula because I do not produce enough for her ( she eats 5-6 ounces a feed since 5 weeks old). Is it possibly nipple confusion?