Pediatric Diabetes Specialist Nurse career pathway

I'm a mature student who is embarking on the journey to starting a nursing degree. A personal interest is to specialise as a diabetic nurse, particularly working in pediatrics. I have an idea of what I need to do up to the point of graduating as a qualified nurse, but I'm unsure of the pathway necessary to specialise as a diabetic nurse after that. Can anyone help me? I know it's a long way off but as a planner I like to have an idea of where I'm going and how I'm going to get there.

So it looks like you need to do children's nursing first and then specialise. Have a look here:
https://www.healthcareers.nhs.uk/explore-roles/nursing/roles-nursing/childrens-nurse/entry-requirements-childrens-nursing
https://www.bsped.org.uk/nurses/nurses_new_diabetes_courses.aspx

@Charlotte's Web may have more insight.

You'll need a bit of post qualification experience, DSN posts are quite sought after.
Diabetes/endocrine experience is of particular use.
Some postgrad education in diabetes, which there are loads of courses out there you can do.

If you type "diabetes specialist nurse" into the search box on NHS jobs, you'll see loads of posts which will have the criteria expected from applicants: note some of these are band 6 and some band 7 posts, so criteria for applicants may vary.

Thank you, I'll do a search. I think I read somewhere that about 3 years post qualification experience will be necessary.