Posted: Mon Aug 8, 2022 8:38am
Hi Elizabeth
To many people are complicating this when its not difficult to fathom, the best and easiest way would be to get one of the many apps, download to your phone or computer enter the dates in and out it will keep you right, I use schengen calculator free.
As in your case forget about you were going for 90 days but cut it short that doesn't matter its the time you enter any schengen country the clock starts ticking, by that the I mean the 90 day allowance starts aslong as in the previous 90 days you havent entered any other schengen country, once you leave that is calculated as your allowable days, dont forget this is rolling so if you spend x amount of days in the UK then you only go back 90 days from the day you expect to enter a schengen country again as to how many allowable days ypu have to stay.
Hope this helps...