My one month old going on 6 months old. I put her on her tummy on the couch last night and she immediately pushed up on her elbows and lifted her head straight up for a good minute. Way to go, little Reagan. We hardly do tummy time, but this girl has managed to build her neck muscles some other way! I am so proud of her! She must have really wanted to see the Stanley Cup finals game that Daddy was watching.