If I were you, yes.

But a question to ask is... Are you willing to sacrifice?

It might be a short term sacrifice. Because maybe after few months or a year, the startup will be acquired or became a hit. We don't know.

Also, do you have family? If you have, maybe consider to ask them first.

When joining a startup, I always said to myself that it's not about the money. It's about the value (experience, learnings, etc.) you will get.