Need to create a button to copy the current record details and update a couple of field labels

So I am still stuck on this. I am trying something different. I am trying to create a button that copies the current record and removes some data from only a few specific fields. 
Example would be: I have a contract that is expiring soon and all the information is in the current record. I need all the information in the current record to be copied except for the comments field, date fields to be cleared. The user will update when needed.