S.B.
Is it possible he is teething? My son was never a good sleeper either, but when he was teething it was miserable. And often the sleeplessness would start before the drooling or obvious teething signs. He would sleep if he was held and cuddled. Tylenol and teething tablets did nothing for either of my kids when they were teething. I am not a fan of co-sleeping generally, but I will admit I caved and did it for periods with my son. Sometimes you do what you gotta do to get through the night!