You can use a lumbo sacral belt for support. You can use it while standing and walking.
Gradually increase your activity level.
Avoid doing any heavy activity for now which may involve weight lifting, forward bending, sitting down.. You can start with light activities, walking around home, routine activities.. Gradually you can also start back strengthening exercises. You can continue to take Vit
B12 and Vit D3 supplement alongwith
Calcium supplement as well..