Bad habit

My son is 4 months, ebf. He has started teething and it is very hard to calm him down.

Sometimes teething toys help, cold clothes. That sort of thing.

But sometimes nothing calls him down, so I nurse him and he falls asleep while nursing sometimes, other times it just finally relaxes him

Is this a bad habit? Do I need to stop nursing for comfort? I don't plan on stopping breastfeeding anytime soon, but my family has told me that if I comfort nurse him he will get too attached to me

Really need some advice. Tia