If you're raising money it should not be a series of random meetings.

You need to be running a process. This includes...

Warm up the process with a pre-process I call "The Roadshow". Meet with your target investors ahead of time and ask them "What would you need to see to get conviction on this business when we start raising capital". Allow at least 2-3 months for this step.
Give yourself (and investors) a fixed period of time for the fundraising process (e.g. 3 months). 1 month for first meetings. 1 month for 2nd/3rd meetings and 2nd-degree meetings. 1 month to close and bring in the capital.
Share your timeline with investors as you meet them. Explain where you and they are in the process
Have your terms and materials at your fingertips
Make sure you've noted and done the things the investors suggested during your roadshow. Show them your notes and your progress on their suggestions during the pitch meeting.
Have a spreadsheet where you track everything.