My ex walked out on us 2 weeks before Christmas December 21.
My son was 7 and my daughter was 15 mos old. I also had/have a demanding full time job and lost almost 2st in weight.
Firstly, you will be ok. Those initial days are full of unknowing. It is absolutely ok if Cbeebie is your babysitter, it still is in my house. I had to rethink my 'standards' to survive.
I would guess it took me 9/10 months to be able to eat properly again and I have (disappointingly) gained some weight back.
Divorce and separation are incredibly stressful. For me it became and emotional battle ground I was fighting alone. So where possible I want you to look after yourself. It's not easy but you need to prioritise it. A good support system will be invaluable. Strong and reliable childcare. Tell your boss at work, they will be lenient. If you can, when you are ready (this took me a while) take a day to spend home alone. Bath, nap, rest, recuperate.
I used to be a keen cook, only recently have a started 'cooking' again. I rarely make the meals we enjoyed as a family and instead make new recipes.
A new routine will organically develop but whilst that happens it's very overwhelming.
I promise you, there is another life waiting for you. It will be different, it will have its challenges, but it is definitely a life worth living.
You don't say why you are separating or whether you need advice on the legalities, there is some wonderful advice on these boards when you are ready to hear it.
Today, put on your comfies, call a friend and have some toast if you can manage it. I remember I couldn't bear the texture of food in my mouth and it would make me retch. For now, eat when you can, a banana, toast, something gentle.
Be kind to yourself