Hard to answer with the only input being ride duration.
If you have a really high FTP and are doing high NP rides then you might actually need to eat as much as you are. If you have a lower FTP and are doing low NP rides then you can get away with eating significantly less.
The 60 grams of carbs is not a recommendation of how much you need to eat, but instead a recommendation for what is the most your body can digest - if you go over that you’ll have digestive troubles and not be processing the extra calories.
For nearly all conditions a 60-90 minute ride requires no fuel on the bike - doesn’t mean you can’t or shouldn’t have any - but your body should be capable of riding at any intensity without you consuming any calories.
For longer rides - it really depends on your caloric burn and the intensity of the ride