With most colleges (especially in CA) not taking in students who already have a degree, your options are limited to private (Which costs more) or lesser known and less popular colleges who probaly aren't the top tier of STEM schools. That means taking on 4 years of a lot of debt and probably no income, which is worth thinking about.

I wish schools would not turn away students coming back for a second degree especially if the first degree didnt pan out in terms of job prospects, or if it wasn't what they wanted to do in the first place.