When I started law, pretty much everything I encountered was new and scary to me. Even the citation rules are different from every other discipline! It's perfectly normal to feel a bit intimidated and not really know what you're doing. Even after 6 years I still freak out over assessments, even though I'm well aware of what is expected of me and what I should be doing.
Since you're not struggling with the content, I'd say you're going quite smoothly and you have nothing to worry about. Everyone thinks ILR is dull, don't worry! Even the lecturer who helped design the course thinks it's terrible, haha.
Remember that a law degree opens a lot of doors - you don't have to be a lawyer. But are you doubting that you want to be a lawyer, or are you doubting that you even want to study law at all? I felt the same way in my first year and it has never gone away, and let me tell you it is damn miserable studying something you have almost no interest in.
I'm assuming you're doing the JD. I would imagine that is a lot more intimidating than the LLB, because you are surrounded by older students who have a better idea of what they want from school and who are probably more motivated and hardworking. Again, I'm not surprised at all and I don't think it's any cause for concern that you're feeling a little scared.
Re crim - you'll have chances to take relevant electives later on. I've heard good things about international criminal law for example! And I reckon if you liked crim you'll probably also enjoy torts, and a whole bunch of other things as well. It's a good sign that you're enjoying some of the degree at least!