Automatic workbook protection

Hello,

All my worksheet are protected with the password (P@sswod!) and when I need to edit an information, I go to view unprotect worksheet but sometime I forget to protect the worksheet back!

Would you know any macro that allows me to have the CURRENT worksheet protected back or to have all my worksheets protected back with the pwd (P@ssword!) when I close/save the file (CTRL+S)???

many thanks in advance,
Graig

note that my worksheet name are: January, February, March, April, May, June, July, August, September, October, November, December.