Awake Time

I don't think this is normal but my baby isn't taking naps anymore. She will maybe sleep 10-20 minutes (max) after she eats each time but she is primarily awake from around 7am until 7pm each day. Thankfully she doesn't get cranky being up this much! What's rough is I have *no* idea how to entertain a baby that cannot hold her head up. We're working on it though. I play with her on the activity mats and do lots of tummy time...that seems to work. Unfortunately she had developed a mild flat head on the right side of her head that I am trying to get back to normal (in other words - round). That really limits what we can do! Any suggestions, please let me know!!