You should take steam bath and physiothrrapeutic exercises to maintain full range of all joints. It will help you to get full range+decrease the contractures+decrease the swelling. Strengthening exercise will jelp you reduce the pain. Keep changing posture even when you are in bed.

Contrast bath---It is a form of treatment where a limb or the entire body is immersed in warm water followed by the immediate immersion of the limb or body in ice water. This procedure is repeated several times, alternating hot and cold. Note that the treatment should always end in the ice water, as heat will induce the body's inflammatory response, while cold helps to decrease inflammation.