IGF and metaformin as a PCT

[bigman1]

Got a quick question I know alot of people take Insulin and IGF along with a PCT and I home to do the same shortly but my question is this: If I take metaformin instead of Insulin how would I dose it and when woul I take it? I plan on takeing the IGF twice a day once in the AM and once before workout but how long after I take IGF should I wait before I take the metaformin? Thanks guys for any input