Ok, I've looked at the underside of the table and here's what I found:

The table top is screwed in at several points (5x along the lengths, 4x
along the widths, plus two bars along it's width with 4 screws each).
Would there be some way to restore the moisture in the wood (via oil or
other methods) and then seal the table with a lacquer to prevent the
moisture from leaving?

Thanks