I know what you mean. Cooper is a little like that sometimes and he is 4 months also. He is getting better as he is getting older, but I put it down to just being able to amuse himself more now he is able to grab at thing etc.

Does your little one ever suffer from reflux? I really don't know much about it, but i have heard that they can get distressed when you lie them down.

Another thing that I have heard is if you have problems similar, taking them to a chiropractor or osteopath can sometimes help. When Cooper was about 10 weeks, he was like this and I took him to the osteopath, and I noticed a slight difference. But the osteopath said that Cooper was pretty good with his spine and everything. They basically check to see how their spine and alignment is, making sure everything is good, as labor and birth can be intense for bubs as well. As I said, I don't know a lot about it, but it could be well worth looking into it.

Hope that helps!