totally normal, teething can be such a pain for them (and us, lol) – we used some teething rings and a bit of cold washcloth to help soothe, seemed to do the trick! here's what the 'Heal App' says.... "It's quite common for babies to experience changes in sleep and eating habits during teething, especially when multiple teeth are coming in at once. To help soothe your son, you can try offering him a cold teething ring or a clean, cold washcloth to chew on, as the cold can help numb the gums. Additionally, gentle gum massages with a clean finger can provide comfort. If he seems particularly uncomfortable, you might consider using over-the-counter pain relief specifically designed for infants, but always check with a healthcare professional before giving any medication. How has he been handling the discomfort-does he seem more irritable than usual?
I use Camilla drops, teethers, tylenol (when necessary). It is normal for them to sleep less and want to eat less or some want to nurse more. Some wake more during the night, or their naps can be shorter. Good luck mama.