my husband and i are having a disagreement on what to do with our investments

currently we have 10% in cash, 20% in bonds and the rest in a money mutual fun. I personally want to just leave it alone he however wants to sell 70% to have in cash and wait for a major dip. I think trying to time the market like that is a horrible idea and would much just rather wait and see. but with all this uncertainty and craziness he wants to change it up. what would you do?