I fixed my same issues and helped many others cure same issue. Severe slip disc issues or other ortho issues can not be resolved with standard posture that we read about them on internet.
Such issues are taken care only after proper assessment of the patient and then posture or variation can be decided.
Many other factors like background history, current physiological and psychological condition are taken into account before starting anything.
One thing I can surely say from my own experience and observation that yoga has sure shot remedy and patient can be out of it between 4 - 8 months.
Please visit my website and read testimonials of those who got cured.
You can reach out to me in case if you need any help.
All the best.