The lean production system is prepared on the basis of a particular philosophy. Your company also has a system of its own that is valid for it. What is expected here is that your company goes through a change and turns toward the lean production philosophy. Changing the lean production system would damage its philosophy.
For application, our suggestion is that you draw up a roadmap and start the work with value stream analysis. Setting the goals here, and the state you want for the future, makes it much easier to decide what you need to do and the speed of application, and it brings steadiness in reaching the goal.
We strongly note that you should take a suitable consultancy service and create awareness by training your employees, starting with the managers. For the roadmap, click here.