Only you know when you are truly done fighting for your marriage, and whatever you decide, I wish the best for you and your daughter. Why do you feel an urgency to file? Do the two you not see any benefit of separation at this point? Have you recieved any counseling to help you come to your decision, or did the two of you decide on your own?
I know that in my case, my husband truly believed he was done, and I accepted that. It was during our separation that I did some serious work on myself (instead of trying to save the marriage), and he realized the grass in his rent house yard was dead compared to the green of our of marital home. He expressed interest in reconciling, and that is when I declared and enforced the boundaries. None of this was quick-fix work; we did that before and like you, ended up apart again.
I just share this with you to let you know that in my case there was great benefit to stepping away from one another, focusing on self-improvement and then reevaluating the chance for reconciling.
As I stated earlier, whatever path you take, I wish the best for you and yours. You have received excellent advice on this thread, and I hope it is helpful to you as you move forward.
