To split the large PDF file into multiple then use a PDF Split Tool. This tool will help you with this. You don't need any technical knowledge to do this. The tool works fast. The advance tool has been designed to split any size of PDF file. Visit here for more info: https://www.osttopstapp.com/pdf-split.html
Drag and drop your PDF into the PDF Splitter.Choose to 'Extract every page into a PDF' or 'Select pages to extract'.For the latter, select the pages you wish to extract.Click 'Split PDF', wait for the process to finish and download.
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Easy to Split PDF files with Split PDF Tool