This question just keeps coming up.
Repeatedly people wonder and ask about this.
And it is an excellent question!
Of course, likely many of the animals spent a lot of time sleeping (estivating or hibernating) and that would certainly explain a lot.
But likely not all of them were so ‘cooperative’ and had to be fed and cared for very frequently or even daily. So, the question arises, “How could Noah care for the animals?”
Recently while surfing the net, I came across another reasonable suggestion of how Noah and his ‘crew’ could have taken care of the animals. HERE’S THE LINK.