Dear tiredlazyandfedup, not unreasonable at all!
First of all you are not lazy, you have 3 kids, including one 11 month old baby and you work full time? Managing a team? You are a hero, woman!!
If i can empathise a little sharing my own predicament, I have lived a similar situation to you as until last spring when I graduated I was doing a PhD full time AND working for not one but two demanding projects AND writing and publishing peer-reviewed articles in my field AND having a family (two kids, teens, but still a family).
Like you I felt constantly behind, did not have a weekend, and honestly the three years of my PhD are now a bit of a blur. Like you I put weight on and neglected everything that made me "me". I used to suffer of depression and anxiety in my early twenties, and the anxiety made a very unhappy comeback when I was living this situation. Life is just really, really hard on women and it's not helping that some public sectors are in deep crisis at the moment and there are less economic opportunities.
My situation was different from yours in that my PhD was a temporary addition to my life, but then things precipitated when one of my important contracts was terminated (not my fault) so I found myself also in a precarious professional position, fortunately by that time I was about to submit my thesis so the fall in finances wasn't as life shattering as it could have been.
What helped me then was to think that the situation was temporary and have a cleaner! I also recognise what you say about spending more money in convenience foods.
My life now is similar to point 1 and 2 of your list: I work part-time (4 days per week) and i work quite a lot from home; I am also in the process of terminating the second contract (this time coming from me) because i realised that, yes, it was bringing me money but it was also taking too much of my time and making me busy and not open to other professional opportunities.
I would say, if I were you, I'd try to do both - work part time AND work some of the time from home; it is a life changer. However (and I speak for myself here, not wanting to give advice as we are all fighting the same struggle) what has also helped me is to have some firm boundaries; saying no to things that take time and absorb energy and do not give anything back (I used to be quite active in local politics and held office for a political party but realised that, although I still believe I the party's ideals, that was not really improving my quality of life - all the admin related to that was another job in itself!).
So, sorry for the long post, I just wanted to say that I think you are being awesome, and if I were to give you any advice I'd say: cut a corner of time for yourself. You are totally worth it Sistah!
Love,
Frida x