Adding Cleaner Shrimp With Peppermint Shrimp

So I added one cleaner shrimp to my 75 gallon. I already have 2 peppermint shrimp, and so far I haven't seen much of an issue. One of the peppermint shrimp will occasionally run the little guy out of his area, but he then stops and retreats back. I'm thinking about adding one more cleaner in to make a pair. Is it too late to do this now?

shouldnt matter

I agree it shouldn't madder both shrimps can tolerate other species of shrimp in the same tank.

I had a peppermint in my 34g then i added a cleaner shrimp. They were fine for a month. Now i havent seen pepoermint in a week. Have no idea what happened