For teething we used anbesol which you dab on the gums... The only thing that seems to work
Our LO has got an ear infection & is teething too! She’s been surviving off watermelon and jelly (we’ve brought the full fat one for the calories when she usually has 0 sugar) I think it’s soothing her gums and easy to eat when not much energy x
He could also have a sore throat x