As a teaching assistant, I would do absolutely anything to ensure the success of a student in my class. You are never bothering me. I want you to come to me with all of the hurdles that are standing between you and your success so I can guide you through them.
This is not something I understood as an undergrad. I never went to TA office hours (except maybe for stats class…) because I didn’t want to be a bother, but those office hours are there for you to utilize. Your TA is a resource. Use them. Ask stupid questions. Come to every single office hour if it helps you. Let them know why you’re struggling so they can help you brainstorm ways to overcome/manage them.