Should I increase my 401K contributions in order to decrease my income for FAFSA?

I did some research on some CSS schools, and my impression is increasing 401K (reducing taxable income) will result in better FA, even these 401K will be added back (questions asking for 401K contribution). My guess these will be treated as asset later, instead as income, which will be weighted much more than asset.

You may play this game with 2-3 target CSS schools.