You must find another alternative for your frog. Frogs need a lot of care. More so than cats and dogs. I'm sorry for sounding rude, but not just anyone can care for a frog. If you cannot devote the time and care needed for the frog no matter how much you love it then you have to understand that you physically cannot care for it. Leaving for two weeks with no one or no way of providing the care it needs while you're gone means that you are not ready to have a frog. I'm sorry, but that's how it is.

I hope you find someone to care for it while you're gone and understand what I'm telling you.