Do you have to have reached the maximum dose of all the other minerals in the protocol before starting the B12?

No, you don’t have to reach the maximum dosage of minerals. But you do need to be taking all of the minerals. Even if it’s just a lower dosage of each mineral.

But, if you’re unable to tolerate the maximum dosage of each mineral, then it would be wise to just wait and not add in B12 yet. Because then you’re adding in another confounding factor into the equation. You’d be better off focusing on the minerals first and getting comfortable with those first, then adding in B12. There’s no point in rushing. But people are impatient. So if you’re really eager to start to B12, then you can. Even if you aren’t on the maximum dosage of each mineral.