Hi @Seuli Das Majumder ,
Once you have done a full load in your ADLS using copy activity, there are a couple of options to do an "Incremental Copy" listed out here :
https://learn.microsoft.com/en-us/azure/data-factory/tutorial-incremental-copy-overview
You can set up a pipeline that has an incremental copy setup using one of the options mentioned in the above doc. Additionally, you can set up a Tumbling window trigger to run at a fixed frequency to copy the incremental records :
https://learn.microsoft.com/en-us/azure/data-factory/how-to-create-tumbling-window-trigger
Hope this helps.