I guess this all depends on what your goals are, if you would like to achieve an OMAD (one meal a day), a 3-day water fast, or a regular intermittent fasting.
The more you time you stay in a fasted state, the more benefits you will get.
As a beginner, it´s better to start small, and go increasing the fasted time little by little
If you are not hungry, trying to drop weight, and within safe calorie restrictions…yeah…t8ghten window and/or cut some more cals. Nice thing about cutting even 100 more cals out is that on x day when you want a 500 cal treat…no worries