Its really hard, isn't it? I sympathise having been in your position a few weeks/ months ago. If it's any consolation in some ways it's easier now - even with a newborn to contend with, although the challenges are different, obviously.
I shamelessly used my friends and family to help out, and cbeebies and dvds of Fireman Sam / Tractor Ted were well used!
I arranged things with my nct friends so ds could play with his friends, and if he ran off/ needed picking up etc my friends helped out. This was SO appreciated, and will make sure I am first to invite them over and help out when they are in the same position.
My Mum is a few hours away but asked her to come for a few days - I needed her more before than afterwards tbh.
I kept ds with his usual childcare three days a week despite being on mat leave. I picked him up early but three days a week had a lie in. I felt really guilty, but it did help enormously.
And, while he had his nap, or the night before, I would prepare something to 'do'. Like get the stuff out to make a rocket, or paints, or ingredients out to bake something very simple. Not that he always wanted to...
And lowered my standards re housekeeping significantly (which aren't up there at the best of times) and my dh came home in time to cook supper.
All very different to the lovely lunches out, shopping, facials etc that I had in my first maternity leave before ds arrived!
And now ds2 is here, if I'm honest it's still the toddler who is more work. I keep wondering what I did with all that spare time first time round! And the baby bit is much easier this time round (but just as lovely).
Hope that helps.
Good luck!