Ditto to what Mastadon said. CS is a huge field - what is he interested in within that field?
My son was also a CS major, and he attended a small LAC. It wasn’t his first choice (or his second), and we were very concerned about them being able to provide the education he would need in that field. At first, he was interested in creating computer games (what computer geek isn’t? LOL!), but then he realized that he was more passionate about psychology/neuroscience and research. He received a double major, and because he has the CS background, he’s very marketable in research labs.
He ultimately had a very good education in CS (theoretical as Mastadon mentioned) and is using it to his advantage now. His friend, who was also a CS major is now working at Amazon with a starting salary of $95,000.
The CS department at this LAC was not large, and it was not one of the college’s strongest. But it gave my son the background he needed to advance in his career. So I guess my message to you is don’t overthink it. I know exactly how you’re feeling because I was there, but everything worked out fine.
That being said, I would consider Mastadon’s advice about concrete/application thinking vs. abstract/theoretical.