registering submodules of submodules with namespaces/import structure

[NiHoffmann]

Hello im building a micropython port at the moment,
Im having trouble registering submodules

i want to be able to have a module structure example_package.foo.bar and be able to call from example_package.foo import bar
when using the example for subpackages(provided by micropython) this does not work, the module can be accesses via:
from example_package import foo
foo.bar
this is not satisfactory for my usecase.

i have also tried what is done in the pybricks project they just use pybricks.<module> as name space and register it with the help of a module name example_package_dot_foo mapped to example_package.foo
this will result is pybricks or in my case example_package not to be an actual module, so import example_package would not be viable

lastly i tried to combine both approaches and register a top module example_package this will get the foo module passed in its dictionary the foo module does the same with the bar. Now i also register the foo module as example_package_dot_foo(with qstring example_package.foo)
this some what works i can now use:
import example_package
from example_package import foo
from example_package.foo import bar
but it has one problem when i run import example_package.foo i will not import the module foo as such
but instead i will import the module foo under the name example_package , so then i use
import example_package.foo
print(example_package)
i will get the information that i printed the foo module while
print(foo) will just throw an error

Does Micropython only allow Importing modules "one layer deep" ? (this is what it looks like to me right now)
<- this is the most important question for me right now
Did i do something wrong maybe ? (my last approach is probably not how micropython is intended to be used)
Is this even possible without modifying Micropython ?
Lastly am i just missing something big with how modules can be registered and organized ?

Thanks for any help with this.

[NiHoffmann]

Additional Information, i'm Building my Micropython as an Embed Port for a different Project. Not for a microcontroller specific.