Hi ShivaSrivastava,
We’re sorry there is no Microsoft method to migrate SharePoint to Office 365 directly. To achieve the migration, we recommend you either use a manual approach or to use a third-party SharePoint migration tool. Here are some articles for your reference:
Prepare to migrate to SharePoint Online
Information about manual migration of SharePoint Online content
For a best practice to meet your need, many Microsoft Cloud Partners are willing to help. If you provide the detailed description about your situation as Mchv2.0 asked for, it will help you find the best way quickly. Thanks for your understanding.
@Mchv2.0, your efforts are always truly appreciated.
Best Regards,
Maggie Li