You will learn all you need to learn about PI law in practice. That's why it's called the practice. I doubt that classes in law school even properly prepare you for personal injury practice. So pick the major that best interests you.
You'll be surprised at how much law school doesn't teach you how to practice. It's a broken system. Sure, you'll learn that negligence involves duty, breach, causation, and damages, but how do you convince a client that you're better than the next guy? How do you build experience in P.I. law? What ethical situations arise when you know you could be making money but you know the client is wrong or that the other side is incompetent? You'll struggle with these issues, and no college major or academic program can adequately prepare you for it.
I'd hate to put words in your mouth, but I'm only venturing to guess that you're interested in law school because it will provide security, independence, or both. The profession is actually not the lucrative and prestigious career as portrayed in mass media and in law school admission brochures. Imagine 100 applicants competing for a position that starts at 40k and requires a law degree. That's 40k before taxes and student loans payments, which can be $1000 a month for some people. There are lawyers who can easily pay that, but most can't.
He needs to go down to the Court and file a Order to Show Cause Re: Contempt. Mother is in contempt of the Court order. If it is in the best interest of the child to modify custody/visitation, father should petition the Court for that as well. The Court won't give him custody or alter the agreement just because mom is in contempt. Since dad does not even have overnights, it makes one believe that theCourt feels full time with mom is in the best interest of the child.