Hello Have a consultation with your paediatrician or lactation consult to ensure the effective latch, feeding. Once it is established the fussiness will decrease. You need to be careful about sore nipples as it would get more painful and eventually you not able to feed.right now have a direct consultation and use of pacifier can be decided if needed.

Greetings symptoms looks like an ineffective latch, a low maternal milk supply, or normal newborn cluster feeding. To manage this, a primary step is have a evaluate the baby's breastfeeding latch to ensure efficient milk transfer and reduce nipple soreness. Another helpful approach is to closely monitor the infant's daily count of wet and dirty diapers to properly track their hydration. Additionally, you might introduce a pacifier for comfort sucking once the breastfeeding routine and weight gain are securely established. Please consult a pediatrician or a certified lactation consultant

Comfort sucking after a full feed is very common at this age, and a pacifier is generally considered safe to introduce once breastfeeding is well established, which it is by 32 days. The nipple pain you're feeling usually points to a shallow latch rather than genuine ongoing hunger.