The truth is that we all have different flows and needs. Depending on how long your period lasts and the heaviness of your flow. The best way is to start small and slowly build your collection over time.
Here is an example of a common pad use for a 5-day cycle
Day 1 – Pantyliner / Medium pad
Day 2 – Heavy pad
Day 3 – Heavy pad / Medium pad
Day 4 – Medium pad
Day 5 – Pantyliner
You may need to change your cloth pad every 3-4 hours depending on your flow or change when uncomfortable.