How big is it? There are guidelines on the NHS website about size etc of burns. I would get that looked at properly. I had blisters like that & I needed a skin graft but it’s hard to tell the size from your picture.
i saw several gp’s, practice nurses and nurses in UTC before eventually being referred to our regional burns unit mine were smaller than a 20p but there was no skin left underneath to ‘grow back’
saw plenty of hcp before I went to the burns unit - all had an opinion - all were frankly useless in hindsight - very nice and spoke very confidently as they do but useless and just got in the way of me getting sorted out properly