should i be trying to spend my money before the financial split?

Hi all, I have filed and am waiting for mediation to begin to decide how we will split assets. I get the feeling that my wife is spending money as fast as she can so that there is left to split (she's probably thinking of it as an impending 50% tax). Is this generally considered to be the right thing to do? I feel like an idiot for spending normally and indeed trying to conserve money if I'm just going to end up splitting it all 50/50 in the next few months. I'd love to hear what the general consensus is. I'm in the UK by the way.