I have had times like this (not a solicitor, but c-level in a male dominated industry with no boundaries)
Everything Lilactimes says.
What's helped me:
I've tried various food things - my kids are older, so are more (or perhaps differently) opinionated on what they'd eat, but when I'm drowning, I fall back on meal planning with fixed meals every day which I just load up in the freezer/fridge and just not having to think about takes a massive load off, and no shame buying in or getting takeaway because it's just too much on any particular day.
I have fixed things I do on particular days - eg. Sunday I iron my eldest's shirts for the week, Tuesday I do the food shop, Saturday I clean the kitchen (and I just let it be during the week). By having it in a routine, I don't even have to think about it any other day - any looming task, I just pencil into the routine so I stop having to remember it.
Calendar. Everything goes on the calendar. If it's not on the calendar, it doesn't exist.
Have some fun still. Eg. last year I spent every weekend for a month working on my youngest's halloween costume with him. Sure, housework fell behind, but we had a lot of fun, and I got a genuine sense of achievement from it.
Try and get some fresh air when you can. I'm guessing it's not easy at your job, but when I've been drowning, just getting 10 mins at lunch, or going and sitting on the back doorstep with a cup of tea Sunday morning. Just stopping and taking a breath, even for a couple of minutes.