the way i did it was 2 weeks of PB shakes then another 2 weeks of the tincture regimen.
you might get by w/ 1hr but more time in between to be sure. try the tincture out w/o the pb shakes to get a feeling of how you reacte to the tinctures. then you can start up the pb shakes. if you feel that the pb shakes are interferring w/ the tincutres then stop.