How hard is sccCGL if I've cracked CAT?

Context: 27M, cleared CAT 3 years ago with 99.5%ile+, Mba from ABC. However, made a blunder by choosing product management as a career path. Stuck in a toxic FANG adjacent company that pays well, but no WLB. Open to taking the pay cut if I switch to a govt job.

I cleared CAT, but only by heavily relying on my English skills, and got only ~95%ile in math and reasoning. I am seriously contemplating switching to a govt job as I have a very minimalistic lifestyle and cannot put up with the uncertainty of the tech industry. Has anyone here cleared CGL while working 10-12 hours in tech? Is there a standard site/mock that I could give to benchmark myself and see how far away I am from clearing the exam?How realistic is it to get a job in Chennai / Blr (as my wife is in tech as well)? Would really appreciate any other tips / guidance to get started. Thanks!