Question about nursing degree

Hi Guys, I'm just looking for some advice. I'm desperate to do nursing as a career. I'm about to do my A-levels, and I've applied to 5 Nursing degrees, one of which is a foundation year. My issue is my grades and my concentration. I am predicted BBC in Biology, English lit, and Chemistry respectively, however, I got CCC in my recent mock. I just feel like I don't have it in me to do my A-levels as I feel lost in all my lessons. I really want to do nursing, but I worry so much that I'm just going to flunk all my exams as I have no clue what's going on, and I can't focus when I try to revise. Does anyone have any tips on how to focus myself, or any advice on alternative pathways into nursing/a nursing field if I do get lower grades than I hope? Thank you guys )

If you do get lower grades than you were expecting, the unis might still accept you on the course, if not they'll probably offer you a place on the foundation course. I flunked my a-levels really badly and ended up doing psychology at uni and came out with a 3rd. I felt like my grades weren't good enough for me to be able to apply for jobs and do graduate schemes so I decided to give Nursing a shot and now I'm in my 2nd year of Adult Nursing. I know there is also Nursing degree apprenticeships you could do to become a Nurse, however I think it is much harder to find a degree apprenticeship than it is to do a course at uni.