Would meralgia paresthetica get progressively more painful with walking/standing then resolve other than the tingling when at rest?

Yes. It tends to be worse with longer periods with your back in extension and possibly tighter close as well. Try loosening belt, pants, especially while standing, as this can aggravate the compression. It should also only be sensory, so if you start noticing motor weakness anywhere, look for a different diagnosis. Hope that helps!