Can you take money out of 401k after 591/2 without taking all of the money out of 401k

Yes of course, that's what you should do, but space it out over the years if you can.

If your 401k is with your employer check with their administrator on what the company rules are, but yes, after 59 1/2 you can withdraw some of the funds without incurring a penalty.

Depends whether you are still employed by the company where the 401(k) plan is located. If you have left the company where the 401(k) is located, then yes - you can take as much (or as little) as you'd like at any time. But if you are still working at the company where your 401(k) is invested then they may restrict you from taking a distribution even if you are 59-1/2. You would have to ask the plan administrator what the rules are for active employes taking distributions.