Unable to handle it all - Working/Studying mom

It just doesn't sound like anyone could make that work. I take it you can't do the residency part time or put it on hold? If you have no other options, I feel for you, but something that can't work can't work. Can you discuss this with your manager or any support services they have, for their advice?

Being more than half way through it is incredibly frustrating, imagining the cost involved and all your sacrifices already, but continuing something unsustainable based on those costs you can't get back sounds like the 'sunk cost fallacy'. Basically you have to cut your losses sometimes if it's not possible to get the gain. You might have to give up something you never, ever wanted to - put off an opportunity, downsizing property/lifestyle, seeking help from charitable or community groups or people you never wanted to ask, all depends on the situation.

For us, we were lucky that we could move in with MIL rent free when we got dealt a string of hardships, hospitalisations, redundancies, and unemploymen¨t. We couldn't keep up our rent (and be able to build any savings at all) or get to use our expensive education and training.

That wasn't in the plan and it was miserable and humiliating.

But in this economy and modern way of life, you get these setbacks, and letting go of what you've worked so hard for, can get you into a more humble spot where you can build yourself back up in a slow but steady, sustainable way.

And we've recovered now more than we ever could have if we'd never accepted a setback or a plan that didn't pan out.

You can't put the pressure on yourself to make this current situation work if it's a matter of there literally being enough hours in the day for the work AND the commute AND the study AND the care AND sleep, somehow. (Remember cutting too much sleep is sacrificing your health, mood, productivity, and makes this life shorter too. It's not something you can cheat - it makes everything else harder in the long term.)

Yes parenting can get easier - kids can get more self sufficient, sleep improve, etc. But it can also get more complicated or challenging in any number of ways, just as often as it gets easier.

You can't count on it getting better because A) no one could tell you that and B) later isn't the problem, something has to ease off now.

Something has to give. It's not good news. But you're not alone in this - 'work hard, have it all' has been a devastating false promise for a lot of people.