Someone heeeelp! My little man is a year old and still waking up every 3ish hours. I’ve tried letting him sleep with me and he just fusses to the point neither one of us get sleep. I’ve tried cry it out with no luck as well. He’s in a room with his sister now and we live in duplex type home so not sure I could try it again.
If it helps in something, mine got better nights after year and half. Always have a white noise in his room that makes them feel calm.