Sure, but the number of questions you have in the first 3 months of the language are bound to be more than the number of questions in the second set of 3 months

Sure, but the number of questions you have in the first 3 months of the language are bound to be more than the number of questions in the second set of 3 months, and far more than after you've used the language for 3 years. Granted most of the questions you have when you're "younger" won't require you to actually ask as you can find answers, but I'd be surprised if the number of questions asked by a user is relatively constant over the first several years of having learned a language.