On a practical side, are you wanting to live at home while you do nursing? Or move away? If you’re planning on living at home, you’ll need to tailor your application to what your local universities want. I live in an area with 3 universities offering nursing within ten miles of each other. They all have very different GCSE requirements. So people round here can take their pick, effectively. If you’re lucky enough to have a choice like that, just target the one that will take you the least time and energy to get into.
If you live in an area with only one university offering nursing where the requirements are a B/6 in maths, English and science, you may struggle to meet those requirements. Be practical. Work out how much living at home vs moving away would be worth to you. Being able to live at home would save a lot of money and allow you to focus on the course requirements. However, maybe you just want to get going with it, even if it may cost you more. But don’t take on more work now than is necessary. Nursing is a long hard course and it’s never been more challenging. You need to give yourself all the breaks you can get right now!