[jollofricepeas]

“We are not generating any revenue at the moment”

All of the advice given so far about your personal family life is important and should be considered…

BUT…

You should attempt to get a job in B2B tech sales before picking up entrepreneurship again.

You lose nothing by taking the time to learn. In fact, see it as part of your business journey.

As a fellow engineer, I empathize completely and had to unlearn a lot of things to become successful business.

Best of luck.

[creer]

This is a great answer also. You have a no-brainer and resume-safe opportunity to switch job. Do you need to learn sales or some other skill? Watch for IP and confidential information but otherwise that might be time to do a little time in a different part of business organizations. Sales, recruiting, marketing, product management... Which one might depend on the entrepreneurship you are aiming for.