Is it possible to create an extension that autoload after USD Composer completes its initial execution?

I am creating an extension that uses autoload to open usd files after USD composer has completed its initial run.

 def on_startup(self, ext_id):

async def open_stage(self):
        result, error = await omni.usd.get_context().open_stage_async("my_usd_file_path", load_set=omni.usd.UsdContextInitialLoadSet.LOAD_NONE)

I tried this too.

 def on_startup(self, ext_id):
        omni.usd.get_context().open_stage("my_usd_file_path", load_set=omni.usd.UsdContextInitialLoadSet.LOAD_NONE)

But nothing worked and when USD composer is turned on I see the new stage.
Is there a solution?