Look you have done amazingly well considering the difficult situation! Take a couple of days off and get back to it after a break. Congratulations for having gone so far and keep going.

I did a PhD full time while working and having a family. It is possible. I found that having a job was helping me to feel competent and an adult when I was infantilised by my PhD supervisor. The fact of having a set time in the week to do my PhD made me very efficient in researching and writing. I completed my thesis in three years, had a positive viva with very very minor typographic corrections and am now editing my thesis for publication with a major university press. It can be done if you are focused, fairly organised and you want it.