Hi @punarj_singh
in general, yes you can. No one prescribes how your XDM schemas have to look like.
But since you may create XDM fields and fields groups dedicated to mobile-only data, it makes sense to keep web and mobile separated.
This tutorial should give you a great starting point.
https://experienceleague.adobe.com/en/docs/platform-learn/implement-mobile-sdk/initial-configuration...
Cheers from Switzerland!