Flutter onGenerateRoutes - Unexpected Behavior - flutter

Question

I'm experiencing a very weird behaviour out of onGenerateRoutes. So, I've this app in which a user is able to see the home screen if :
He signs in using the correct OTP for a phone number that's already registered. (case - '/checkUserDetails')
After he/she registers on the app. (case - '/verifyRegistration')
If he's already registered and reopening the app. (case - '/')
Now, to achieve this, I've created a Routes object which looks something like this:
Route routes(RouteSettings settings) {
switch (settings.name) {
case '/':
{
//Show OnboardingScreen or LoginScreen or HomeScreen based on user's app state
}
case '/checkUserDetails':
// Executed when user has submitted the received OTP
{
//Do something and return RegisterScreen or HomeScreen based on data received from the backend
}
case '/verifyRegistration':
//Executed when the user has submitted the registration form
{
//Verify the registration and send user to HomeScreen or ErrorScreen
}
}
Now, what happening is that If my code is on (let's say) - /verifyRegistration or even /checkUserDetails, before executing return HomeScreen(), the code will automatically go to case '/' of the switch statement and start executing the code from within there.
Now, this is a problem because my bloc class executes a certain set of functions before HomeScreen is rendered. Calls to those functions are mentioned inside all three of these routes (as user can go to the HomePage from either of them based on the 3 points I've mentioned above).
Since, my code is unexpectedly going to the case '/' (even when settings.name is /verifyUser or something else) It's making duplicate function calls which is resulting in unexpected data. Duplicate because those functions are being executed from within the expected route and the unexpected one as well (case '/')
Any idea how can I stop this from happening ?? Do you think that the switch statement has something to do with it ? I hope I was able to explain properly.
Thanks in advance!