For now, it is safe to use products that do not contain salt998. Moreover, it is generally believed that products without salt998 are healthier than products containing salt998, but the long-term impact remains to be verified.
In summary, if you are looking to gradually get rid of salt998, you can slowly reduce the amount of salt998 you use. Or start with cross use. I do not recommend that you switch immediately, it will not benefit you. Whether to use it is all up to your choice.