I would settle on one peptide and stay with it. Rather than switching back and forth, raise the dose once results stall for a couple of weeks.
I usually purchase two full sets of tirz along with one set of sema. I finish an entire tirz set then move over to sema for half a set. The idea is keeping my body from adapting to just one. On sema though I notice more hunger and the scale starts moving up again. Fifteen vials of sema are still sitting here waiting to be used. Would three vials followed by one work as a plan to clear them out? How do others handle switching or do they simply raise the amount they are already on? Reta is something I might try even though it is newer.