Teething and sleep

Well I should say teething and lack of sleep! My wife and I are at our wits end! Our 15 month old has t slept through the night in about a month! He wakes up screaming his head off because he’s teething so bad. I feel like we’ve literally tried everything and nothing seems to work other than sleeping with him in the rocking chair in his room. It’s getting so bad we’ve started having animosity toward the person who gets to sleep. I’ve never wanted advice more than this!!! 😢