Going through a separation

Hello, my wife and I have decided to end our relationship. She has made it clear that she doesn’t want to be with me anymore, even without any proper explanation.But, to be honest it is a mutual thing as it hasn’t been right for a while now.We have three children (14, 12, 5) and we are all currently living in the family home.I spoke to a professional from this website who gave me some great advice and recommended a mesher order could be the way forward.When I mentioned this to my wife, she keeps making excuses, I think she just wants me to move out and rent somewhere (with my name still on the mortgage) but surely I need some legal order in place to give me a date as to when I can rightfully receive the equity from the house?She is unable to afford any mortgage if my name comes off, so I thought by keeping it on and renting myself (even though this would not leave me a lot of income after child maintenance) would be a good move for both parties. She would continue paying the mortgage on the house.She is a lower earner (working part time) and would have most of the care for the children, I work full time but would have them as much as I can. However, if I rent, I would probably only afford a 1 bed flat or at a massive push a two bed. I know it would only be temporary but having an end date would give me something to work towards.Neither of us have done anything wrong in the relationship, I think we have just grown apart over the years.Am I being reasonable or is there anything else I should consider.I really want everything to go as smoothly as possibly, especially for the children.How do I move forward if she won’t agree to anything?