Having a robust support system is a great initiative and extremely vital in managing the ups and downs of solo parenting, which many tend to forget or feel reluctant to ask for. It's heartening to see you take the bull by the horns and initiate backup childcare options and emotional reliance on parent groups - a smart move
As for me, I'm fortunate to have a reliable network of family nearby, which makes me appreciate and value the importance of having a solid support system even more. Besides the obvious help with babysitting, etc., just having someone to vent to who understands your situation is an invaluable outlet. I think it's also essential to cultivate a robust online community - especially for us introverts. There's a sense of anonymity and vulnerability in reaching out to strangers online that can be empowering and comforting, surprisingly!
As for keeping up with my well-being, I make sure to pencil in "me time" without feeling guilty. Regular workouts at the gym help me blow off steam and release endorphins, and an occasional indulge in a massage or facial keeps me sane. If I'm unable to afford these "luxuries," I'll treat myself to some solo time at the park with a good book, or binge-watch an addictive series - alone time helps recharge my batteries! Also, finding activities that your toddler enjoys keeps the tantrums at bay for some quiet alone time. Haha!
I realize these are temporary fixes, but they help me stay afloat and sane most of the time. It would be interesting to hear if other parents have discovered more creative ways to manage their solo parent journeys.