To get a journeyman electrician license in Texas, you need to have 8000 hours of documented on-the-job experience working under a licensed electrician[1].

So you'd need to find an electrician who will let for you work them on the weekends, and if you work 8 hours every Saturday and every Sunday, then it will take you 500 weekends.

A residential wireman license only requires 4000 hours[2], but I'm not sure if that kind of license would be good enough for the inspection.

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[1] https://www.tdlr.texas.gov/electricians/apply/individuals/jo...

[2] https://www.tdlr.texas.gov/electricians/apply/individuals/wi...