DC is 22 months old and it takes 2 hours to get him to sleep at night. I only have myself to blame, as he's so used to me sitting in his room whilst he goes to sleep, but sitting in his room for 2 hours every night is getting too much, it's my only time to do my own thing work and child-free and I'm starting to feel resentful, which is unfair to him.
If I leave the room he screams and cries. Is it too late to try to teach him to self soothe?