Hello, we have a similar situation. 2 and a half year old, family not nearby, working, house renovation etc.
I have been able to drop to 2-3 days work max a week (freelance), husband works full time. His weekends are spent renovating our new house. My parents help occasionally but can only manage half a day a week absolute maximum.
I've just accepted we're in the trenches at the moment and I know that things will get easier when we move into our new house (currently in a tiny flat)
I also need to lose weight for general fitness and well-being. Still carrying a lot of weight after my pregnancy. I invested in a Swifty scooter and a kids seat for my bike. Kills two birds with one stone as my toddler is very active and can already do long trails on his bike. He's happy and I'm getting fitter. I go with him on the scooter or I take him out for the day on my bike. We're both happiest if we're outdoors in the fresh air on adventures together rather than stuck at home. I had grand plans to go swimming in the evening but I just can't be bothered once I've put toddler to bed. I find it easier to exercise while I'm out with toddler anyway. Highly recommend sorting out a bike seat, packing a picnic and heading off somewhere. It's so good for your mental health and I find my toddler much more pleasant when we're outdoors all the time- they're like little wild animals!
I would say you're really missing a trick not making friends locally. I am in a WhatsApp group of about 15 other mums who are all good friends. We met through baby/toddler groups and they have been a lifesaver for us. The dads have their own whatsapp group too. It's provided the village I've needed to stay sane: we do play dates, garden parties, meet-ups in the local park, and nights out just for the adults. Can you go to a toddler group on your day off and meet some other mums? Or invite a couple of his little nursery friends over for a play date and get to know the mums?
If I'm ever having a tough day I know I can put a message on the chat and (more often than not) at least one mum and their toddler will be around to meet up. We can go to the park and chat while the kids entertain each other. At the very least everyone has a sympathetic ear and a moan over WhatsApp. Make an effort to meet people. Absolutely prioritise it. You need friends separate from your husband. He does too. You need to be able to go on nights out and talk to other adults.
In terms of streamlining life these are the things that help me:
-Cull the toys. Keep toys in a cupboard out of sight and do a toy rotation.
-Cull your clothes. And toddler's clothes. Cull everything! I'm a big fan of minimalism. We currently don't have the space to have too many possessions anyway, but I find keeping belongings and clutter to an absolute minimum helps with stress.
-Get heavy, bulk-buy items delivered to your door and cut down to only buying fresh things in the shop
-Simplify cooking. We have porridge most mornings but with different toppings. I keep a list of dinners on the fridge that we rotate because I can't be bothered thinking about food.
-Make use of the slow cooker. We do a solid rotation of curries, chilli, and Bolognese. Other meals are kept really simple: baked potatoes, pastas, omelettes, salmon with veg and cous cous, burgers, etc.
-Don't stress over feeding toddler. Just put the same food out as you're having. If they don't eat it, give them a bowl of porridge for supper.
-I can't be bothered with anything that takes extra time. We don't do regular bath time for example. I need a shower anyway in the morning so toddler comes in with me and mucks about with his bath toys. Ten minutes and we're both washed rather than the faff of a bath just for him every evening.
Go easy on yourself. Things won't always be like this. Do your best to lean into things the way they are for now and remember these phases all pass.