How long did it take to get a specialist portfolio?

Hi,

I am currently curious as to how long other Biomedical scientists have taken to get their specialist portfolio.

I have been trying to complete mine for 4 years with no support. I am wondering whether it is now reasonable to go elsewhere to get it?

Is it reasonable that if I change job I am likely to get it done sooner or are all NHS/UKHSA micro labs like this? I am struggling to decide whether to stay in the field or leave because I have no development opportunities