Nope! Mine usually go about every other feeding. If they are close to shedding they'll hold it even longer. Then I get a big present!!!!
I use an app called snake keeper that documents everything from feeding, weight, length, shedding, and poo!! After a short while you will start to see a "close" estimate at when to expect what. This changes pretty frequently with juveniles but can be pretty accurate for an adult. You can even export and e-mail yourself the statistics from the app. Most people don't do this, I just find it fun to go back and look at.