Split PST File software is excellent which divides large PST file into smaller PST files as per the specific criterion like size, date, folder and etc. software has advanced features The ‘Message Filtering’ option helps the users to select items between two dates and start the conversion process. Support Split both ANSI PST and UNICODE PST file.

Read more: https://www.kdetools.com/pst-splitter/

 

You can also try move to folder option to split large PST file in Outlook. Here is the step by step process to perform this task:
1. Click on File tab >> Account Settings >> Account Settings Click on the Data Files tab and then click Add button to create a new PST file Go to the Home screen.
2. Open the default PST file and select the items which you want to move to a new PST file you created.
3. Click on Move button from the top and select Copy to Folder option.
4. Next, choose the PST file from the copy the selected items to the folder option and click OK.