I'm kind of having an issue understanding what you're wanting to do, so i'm going to assume that you want to make your snake fat, since your late on the breeding season?

If that is the case, I wouldn't recommend making your snake "fat" as it will cause them to be obese and lead to an early death, or a very unhealthy snake.

If you can't make breeding season, then I wouldn't try to over feed your snake. Your snake relys on you to take care of her. However maybe I can offer you some insight as far as feeding. If you are feeding her once a week, try feeding her a nice meal every 5 days, just make sure its the same size as the thickest part of her body.