Hi, I am a 2nd year student.

I would honestly not worry too much - they don't expect you in first year to know everything! I have found that the more musculoskeletal practicals all the anatomy starts to tie in with pathologies; and knowing how to test that structure/muscle is one of the key things! You want to be able to do cyriax/maitland etc assessments and be able to know that if the test is positive what is affected. This is more important than knowing your anatomy off by heart imo
Don't forget that in a real clinical setting, you will always have access to a textbook!