I've always adhered to the traditional Eucharistic Fast from midnight since I was a child in Catholic school, even in the the early days of the N.O. in the seventies before all hell really broke loose. The "traditional" priests used to demand no food or drink after midnight if you were going to Communion at Mass the next day. And, oh, you were going to Mass, no excuses need apply.
So usually on average, I'm done eating by 5 oclock in the afternoon on Saturday because we usually eat an early dinner and maybe a snack once in a while around seven at night, but rarely, Then nothing until after 12 noon TLM Mass if I'm going to recieve, which is usually. It's my family schedule that gets in the way once in a while more than anything, but fasting is not an issue.
I think twelve to fifteen hrs on avaerage when half that is sleeping is not much to ask for the average communicant who is generally healthy and stable. The problem is we live in a very undisciplined and pampered culture used to instant self-gratification with almost no conception of sacrifice and self-denial.
For what it's worth, the muzzies fast from sun-up to sundown for thirty days straight , while abstaining from not only food or drink, but cigarettes and sex as well, some will not even engage in backbiting, disagreements or swearing as to break the fast And that's just during Ramadan, when during the summer months, can be a long day without anything.
We shouldn't let infidels like that show us what devotion is all about.