Use i-on.pyw to track WiFi usage by logging in to ISP website and scrape the usage data and store using Google Forms. An interactive sample chart from this data published here
Use speed_recorder.pyw to periodically track connection download speed using fast.com and store using Google Forms. An interactive sample chart from this data published here.
These scripts can be scheduled to run at a constant time period, every day using Task Scheduler.
In order to use this, you need to have Python 3+ and the required modules installed in your machine.