Well, I disagree. BP's do not have the same nutritional needs as humans, so comparing them is apples to oranges. Also, bp's can survive months without food, so 2 weeks isn't going to "starve" it. The rest of your post is exaggerated. My bp went over a month without food and only lost 10g.
To the OP, how much do large rats weigh? It would be ok to feed him every two weeks as long as the meals are big enough.