I suggest the best method to quickly migrate OLM to PST file so you can try automated software OLM to PST Converter. It also provides you the filter option which helps you to find the specific mail by date range, subject and other attributes. You can also preview the files before you convert them.
You can download OLM to PST converter software, which is the perfect software to convert OLM data to PST file format. This software converts OLM data to other file formats like PST, EML, HTML, PDF, MSG, etc. OLM to PST converter tool can export OLM data to Office 365 & Live Exchange server. This tool exports OLM files securely in few steps. The tool is compatible with every new and old version of Mac, Windows OS and MS Outlook.
Get more details about tool from here: https://www.datarepairtools.com/olm-to-pst-converter.html