Considering switching to Levo and Tiromel when run out of Thyroid-S but don’t know what equivalent is, can anyone advise please?

[Hendie]

I’m thinking about switching to Levo and Tiromel when run out of Thyroid-S but don’t know what the equivalent of each is, can anyone advise please? I am currently on 3 grains daily. I’ll have to source my own Tiromel but it may be easier than the stress of sourcing Thyroid-S. I may try just Levo first and if T3 dips then add Tiromel - I currently have some 25mcg stock so can use that and just get Levo from Docs.