The above poster whilst well meaning clearly has no idea what radiography is like (and this is endemic of all AHPs unfortunately despite uni courses trying to promote interprofessional working).
Radiographers have never been in higher demand and you are guaranteed to get a job when you finish. If you want you can have a job lined up the winter before you are due to graduate.
Many departments have a progression path for radiographers to gain band 6 within two years if competencies are met. There are several ways to progress beyond band 6 via clinical skills/reporting, management, teaching, sales, apps specialist, etc
But I think you are over-simplifying a difficult decision. It sounds like you are comparing needing to do maths (which you probably need more of in nursing than radiography tbh) to clearing up bodily fluids (which radiographers have to do as well as it is a core part of patient care). Nursing is a wide ranging profession.
What I would do is take a year out, get some experience, maybe work on the bank as a HCA, get onto wards and into outpatient areas, even community if you can. This way you will work directly with nurses every day and see what the job is really like. For the sake of a year it's worth knowing what you want to do.