This happens sometimes. I had a little girl who screamed for 7 months and I just transitioned a little boy who screamed for 4 months so those were my most difficult children to date to get happy. I had other children start at the same ages who were happy from the very first day. You just never know. Get the little guy into your routine and schedule and try to ask the Mom about his routines at home and get them in sync as much as you can so his little body gets used to the same thing every day. Before you know it you'll have it all under control.

This is not an easy job and it is not for everyone. It takes a ton of patience and a lot of hard work but once you are rolling smoothly it's wonderful.