How to capture Follow up date change count & Expected close date count automatically as and when user keeps changing follow up date

[Mithil]

I want to capture Follow up date change count & Expected close date count automatically as and when user keeps changing follow up date or expected deal close date to track how many times they have update d the record .This is to be captured to review that how many time followup was taken before opportunity is closed lost

[rahul.rafaliya]

you can use this by default filed

Admin>Lead>Followup date change>
Add that filed in your required layout