In Manual method, there are some limitation which makes it worst so problem of large pst files is really serious because you may lose your important data if you are unable to find the right solution.
However, there are many third-party software to split pst file which are large but selecting the perfect one is quite difficult and if you want any recommendation then i would highly recommend you to use this PST splitter software which can easily split your large and over large pst files into small parts of pst files. This software generate log report of entire this process to assist you in verifying the total number of items.
It comes with so many advanced and well developed features to add more accuracy and efficiency in this software which provides lots of option to reliably split pst data. This software can support all version of MS Outlook such as 2019, 2016, 2013, 2010, 2007 & 2003 and compatible to all latest windows such as 10, 8.1, 8, 7. This software is 100% safe and secure which ensure the data during process and maintain the original formatting.
Visit here:-
https://www.softmagnat.com/split-pst.html