Severe back pain. Back to normal life. ?

Dear Dector, I am an IT professional. My job requires to work for 10 to 12 hours on week days. Eversince lockdown started, I have been working from home looking down my laptop for hours and getting up from chair only for lunch and teas. I am now experiencing severe back pain starting from my neck to lower back. Now the pain is unbearable as after I lay down on bed I can't move to my left or right. I am unable to get up from my bed. I struggle 15 to 30 mts to turn my position on bed and getting up from bed daily morning is a struggle and challenge for me. I was very active just before lockdown. My office was on the 8th floor but I never used lift and would use steps to ascend and descend. Please advise how can I come back to normal life.? Thanking you Regards, Prasobh Krishnan