Ask HN: Boss Offers me 50% work instead of quitting

Hi Guys I have been working on my side project for a while. But its clear to me that I need to be more focused. I feel great when I work on my project over vacation, and my current job is not necessarily a dream job. So finally I decided to tell my boss I would like to quit for the purpose of a startup. And his response is, "What about working 50% ?".

Should i take the offer and do a soft exit ?

Note1: 50% of my current salary is tight but enough to live on Note2: I have enough savings to go for about 2 years without work.