my peppermint molts too much?

[luke30mm]

i am not sure if this is normal or what i have 5 peppermints of various sizes and the two biggest ones have molted about once every 3 weeks is this normal?

 

[billsreef]

Yup. The other ones are likely molting just as often also

 

[Dragon68]

yeh, mine does the same.