Hrm that's trickier, although the specifics depends on your family situation (does your significant other work?). I have a family myself, wife and two kids. I can say from experience that what would have helped was having a large rainy day fund - e.g. 1/2 your annual salary. I had a much smaller amount set aside, which was only barely enough to make it to a comfortable job as a higher up in a startup (see my edit above). And to be honest the stress and uncertainty almost destroyed my marriage, even though she was very, very supportive of my choice.

Having a much larger savings would have helped. Having a plan B is also good. With a family you need a safety net.

I'll be honest that your options are more limited, but I'm proof that it is possible.

But is it what you really want? Whether you go this route depends on what is driving you, and how strongly.

Are you local? Feel free to reach out to me if you want more advice from a parent entrepreneur. My email is in my profile.