dont want to lie to you but teething can go on for many months before they cut their first one im afraid

Colby started teething around 6 weeks old and didnt cut her first tooth till around 6 months. I can always tell now when shes about to cut another tooth as she gets really sore looking nappy rash the week before.
Only thing i can really suggest is getting a gel ring for him to maybe chew on
(sorry im not sure how old he is) even if you held it for him just to cool his wee gums


