Why Hood's redesign brought persistent excess weight

How could Hood's persistent overweight problem have been avoided?

Only by avoiding the post-Jutland redesign and building the Admirals substantially as first designed.

The redesign kept adding protection and other alterations as Jutland lessons were incorporated. Those changes accumulated weight and prevented an easy cure. Avoiding the problem would require avoiding the redesign itself and building the original Admiral-class plan. Improving survivability became costly once the original construction assumptions had hardened.