loss weight

Husband is been losing a lot of weight for past few months. He never even tried to do anything to make him lose weight. He never uses any appetite suppressant nor diet pills to help curb his appetite. He didn't even do any work-outs too. Unlike me, i uses a lot of different techniques of losing weight but it seems like it never work. I still have one month to lose at least 10 pounds before our PI trip. Do you think it is possible to achieve the goal?