Hello Saideshwar,
SPDD can't be an automatic process, because you have to choose if mantain or loose your custom modifications. To speed up the process, you can choose to include your work in a CR and import that CR in the systems of the same landscape. Follow carefully SAP docs to understand how to do this.
One more thing: SPDD is not a routine task (like it seems to be from what you wrote) You have to do it only when the system asks you to do it, that is during ABAP patching or upgrades.
Best Regards,
Valerio