anat0l,
I do not think you are correct with this. It is preferable and advisable to enter the steps each day but provision has been made for late entries.
See below:
Q: Do I have to enter my steps in every day?
A:GCC recommends that you enter your steps every day to allow a steady journey throughout the GCC course, and to allow for your team statistics to be a true and up to date reflection of your performance. However, we understand that it isn't always possible to enter your step counts every day (i.e. if it is a weekend, if you are on leave, if you are on a business trip etc). So, simply keep a manual record of your daily step counts and the next time you log in to the GCC website you will be able to view all the days that you have missed step entries for. You can then submit these missing steps in one go via the Step Entry section on the website. It can be frustrating for teammates if you 'save up' these entries for too long so be mindful of their experience of the course as well.