Hi Pam,
Actually ProZinc works similar to N which you used first, right? It isn't a depot insulin so you have more flexibility. So, you can give earlier or later if needed, you can dose different amounts am and pm, can dose 11/13 if needed. The difference is that ProZinc should give you longer cycles than N and shouldn't have that early fast drop. It does not have the protocol of Lantus, so you lose that comfort of knowing what dose you will give each time. With ProZinc, you adjust more and have to try things to see what works.