Exactly. The food need by most animals needs to be fresh. How did the food stay fresh? An elephant needs 42 gallons of fresh water, and 600 lbs of food a day. Put together all the animals, there is no way to carry that much fresh water or food.
Let’s not forget, someone has to feed the animals. Even if Noah’s family slept in shifts so that someone could always be feeding them, they still managed to provide new food to 2,500 animals an hour— meaning it took less than a second and a half to feed each one.
Your viewpoint is based in what man can achieve and not what God is able to achieve. To imply what you imagine can’t be achieved (or overcome) by God is you limiting God by your own imagination. Nothing we can think or dream limits what God is able to do.