SecondChance, Here's my take on what your h is attempting to do. He is attempting to try it one more time so that if he doesn't feel that it's right, he can say that he honestly put forth the effort to try one more time. He wants to look like the good guy here and be a "man", come home and try....notice I didn't say one word about your efforts? Why? Because it's all about him. Time stipulations such as this are made by an emotionally high charged individual that feels he/she needs to have this happen right away before something happens to change the situation.
I would suggest that you tread lightly, listen and observe. I do not think this man is ready to come home permanently. I truly believe that he thinks he is, but honestly...all the talk about France, etc., makes me say.....date him for a while....he would have to do a better job of convincing me about wanting to come home. It's more destructive to you and your family if he comes home and bolts again. Been there, done that.
Do not allow him to set a time limit on your decisions....
Sit quietly, the answers will reveal themselves when you least expect them to. The past is gone, the present is a gift and you need to focus on today, allow the future to reveal itself when it is ready.