Like everyone else has already said, max both 401k (35k total), then max Roth IRA - another 11k, and then think about maxing an HSA if you guys have a HDHP (6.5k) - that forces you to save a little over 50k, which is likely close to or more than 50% of your after tax income after federal, FICA, and state tax (25+7+9 = 41%) - this means that you're currently about 28k short of that goal
To reach it, start cutting from below:
Childcare costs are a little high, any chance you can find an alternative? (Maybe a SAHM friend who can watch your kid for less than 1500 a month?), if you knock it down to even 1k a month that's 6k of the 28k you need to get to
Gas - cut it in half if possible, another 2.5k of the 28k
Grocery/Dining - eat out less, bring lunches, should be able to knock it down to 600 or less, another 2.5k
Phone - Republic Wireless/Ting - knocked down to 50 or less, another 2.5k
Insurance - Get rid of whole life - you might need to provide us with some more details to decide where to keep, but most likely the answer is no, that should save you about 200-300 a month, we'll say 250, which is 3k
The remaining (28-(6+2.5+2.5+2.5+3)=11.5) 11.5k should come from tax savings as you up your before tax contributions to 401k and HSA
Good luck! Keeping a 50% savings rate requires a lot of discipline, which can be hard in a place like California, where money is sometimes treated like toilet paper : )