Appending data, triggering Action Engine without Data Model Reload

Hello fellow Celonis users,

we would like to append data to the activities Table without having to reload the data model. Furthermore, we would like to trigger the action engine based on the new data in the activity table. So far, we have tried the push data API:
https://python.celonis.cloud/docs/pycelonis/en/latest/notebooks/02_Pushing_Data.html
Unfortunately, the data only appears after a full data model reload.
The reason why we would not like a full data reload, is because this takes too long, so preferably we would see the data directly, or only reload a single table.