Tapering or Cold Turkey?

For those of you who have stopped on your own without rehab, did you do it by stopping cold turkey or by tapering down slowly? When I try to stop I crash so hard I can’t function I’ll basically sleep for 3/4 days and with my current situation that isn’t possible nor is rehab. I have a lot on the line. On probation, full time college student, work full time, have a kiddo who depends on me, etc. I can’t lose everything by submitting to the shit and giving my job degree probation and kid up by going to rehab. Also can’t continue on in using and eventually getting caught. So, If you tapered down slowly, how much did you go down per day? Advice please thank you