Splitting a route on cycle.travel into stages

Hi,

There is a route that is 200 miles on the website that I would like to do over 4 days, is there any easy way on cycle.travel to split this into 4 so I can then export the 4 gpx files?

I have seen the 'plan my trip' tab for the route but can't see any obvious way to do (I have seen talk of adding an overnight stop and splitting into multiple days), but can't see how to do

Can you help please?

Many thanks