Shrimp molting: good sign or bad?

I have a cleaner shrimp that has shed its skin several times in the last few
months. Is that a good or bad sign? I didn't realize it would be so frequent.
Of course, I also have a fire shrimp so I can't be positive that they are all the
cleaner. I think they have both molted.

I was told that they only have so many moltings before they die. Can anyone confirm this info? You may want to try and feed it less if you can. I know my cleaner shrimp will take food from my hand and will beg for food if I place my hand in the tank. It has also molted 3 times in the last 2 months but it is still small. I'm trying to put him on a diet but he stills food from my corals and anemones.