By setting the Infinite setting to False like the attached file below, then testing by breaking the block at least a hundred times, the ore does not seem to revert back to bedrock.
Found a naturally generated Bedrock Cookie ore and mined it for awhile with a high efficiency pick to insta-mine it.

When checking it's NBTdata, it seems that the durability never actually drops, so the issue lies in the fact that setting "Infinite": False
doesn't actually work.

I cannot access my computer right now, but I will work on this as soon as possible!