Time is flexible. I’ll sometimes adjust my fasting times to work around something. It’s helpful to know ahead so you can plan the day before.
It can make you feel a bit wobbly, to be honest. Your body does get used to the routine. But better to wobble than to fall.
In the future, just start your fast a little earlier and you can maintain your minimum fast (whatever you decided your minimum is) while breaking the the fast a little earlier in the day than normal.
Planning ahead for at least a couple of days allows you to change up when you start and end fasts in whatever way works for your life!