You can achieve your goal without full-time study at university through an RNDA (registered nurse degree apprenticeship). To join, you normally need A-levels in both Maths and English, which are far from easy. (I used to teach A-level Maths. It's far, far harder than GCSE Maths).
If that route's not for you, you could become a Nursing Associate first. To get onto a course, you'd need higher-grade GCSEs in both Maths and English and possibly at least one A-level pass (not necessarily in those subjects) too. Once you'd achieved that qualification, you could then then do a shortened RNDA course (taking two years instead of four), to qualify as a registered nurse, before moving into a specialism such as epilepsy care.
https://www.healthcareers.nhs.uk/explore-roles/nursing/roles-nursing/nursing-associate