A few months ago, I also suffered from slipped disc because of some accident.
The following actions worked for me and now I am again to absolutely normal without any restrictions in any range of motion:
(i) Rest (on the mat on the ground avoiding soft mattress/bed) with some relaxation postures, though I was on my daily routine activities with restricted mobility - 2 weeks.
(ii) Hot & Cold Fomentation on affected area of lower back for half an hour - 3-4 times a day
(iii) Accupressure for 10-15 minutes twice a day - especially on foot area for slipped disc/ lumbar area.
(iv) Avoid any bending or lifting weight.