The schedule

The water has no schedule of its own. Add it once per powder vial, usually 1 mL to 3 mL, and 2 mL is the common choice because the numbers come out clean. With 10 mg of powder in 2 mL you hold 5 mg per mL, so one unit on a U-100 syringe is 50 mcg. Write the strength and the mixing date on the vial the moment you finish, because memory is the weak link.