Do not sign ANYTHING without having your own attorney review it. And no, you don't use the same lawyer. If you had no assets and no children and no alimony, maybe then you could use one attorney. But not when you have property and kids to divide.
Make it clear to him that you are totally willing and not dragging your feet, but that you will not sign anything without reviewing it with your attorney first "just to make sure everything is right". Stick to that boundary. You can sign that you received papers to avoid the hassle of being served but nothing more. The
