My 6 month old is up every 2 hours in the night. I am exclusively breastfeeding but I am getting so tired I’m tempted to give her formula just so she sleeps longer 😣

I’ve tried spacing out her daytime feedings so she isn’t grazing at night, I feed her on both sides so she’s full, when she wakes I try not to let her nurse to sleep, if she won’t stop crying I go help her back to sleep without nursing (trying to nurse every 4 hours) and she just won’t sleep for long. I know teething can be a factor and sleep regression but I’m exhausted and seeking any tips 😊