Changing your mind is allowed. Changing it every week is just dodging the choice.

Updating a plan because you learned something is just thinking. Updating it weekly with no new information is a way of staying in the comfortable part, where everything remains possible and nothing has been committed to. The test is whether anything actually changed outside you between the two versions.

Write down the reason behind the plan you hold now, and revisit it only when that reason stops being true. Give yourself a review date instead of a running referendum. Where you keep flipping, pick either option and hold it for a month to get real information.