I’m surprised to find you making the same argument Zeno made to “prove” there’s no such thing as motion. Only you did it in reverse
“… if we go backwards in time by that same amount, or twice, or thrice, or 10 or 100 times, the Universe would be smaller, but would never reach a size of 0. Respectively, it would be half, a quarter, an eighth, 2^-10, or 2^-100 times its original size.”
That which is in locomotion must arrive at the half-way stage before it arrives at the goal.
Of course this is not correct.