Severe multilevel lumbar spondylosis worst at l3-4 and l4-5 what can be done about this?

Several things: First, you need to assess your health status in terms of regular exercise, weight control & tobacco use. Are you getting a good night's sleep on a good mattress? If the pain persists or is getting worse, try over the counter medication & a simple back support &local heat applications. If no better, see primary care doctor for evaluation &to discuss next steps such as medication, PT, imaging