You will probably discover that you can't do as much as you once did. You don't have enough time and/or you don't have as much energy. Don't sweat it. It doesn't matter. No one is judging you but you, so you can choose not to. Make decisions about what matters, and do those things.

Take care of your health. It's too easy to ignore your own health, but it's like putting your own oxygen mask on before you put your kid's mask on. You need to make sure you're in the best shape you can be so that you can be there for them.

No two kids are the same. Any specific advice anyone gives should be interpreted as "this worked for me, you will most definitely have different results".

It will feel like you're being pushed to your limit because you are. It's a tempering process. Every day, everything you do will make you stronger.

You will make mistakes. Massive, horrifying mistakes. They will eat at you for years. Let it go. Make sure your kids know you love them. They'll figure out you weren't perfect on their own. If they were loved, they'll forgive you for your mistakes.

I strongly recommend you take that last bit of advice and let it go. If you succeed, let me know how you did it.