I would reduce my 401k down to meet the company match until the student loan is paid off. My reasoning is by transfering the 401k money to pay off a loan that is 6.5% you get a guaranteed 6.5% return. That kind of return is very hard to find right now. You've already done good to get that much into retirement. Now that you have a baby on the way you might have to cut back for a while.
I used to contribute 25% and max out my roth IRA before I had a family and I'm now down to just getting the company match in my 401k. It sucks, but you have to take care of your current needs first before your retirement needs.
Once the student loan is paid off and daycare payments kick in I would revisit how much I could put into my 401k and roth IRA.