There are several different ways to monitor for proposed changes to regulations that largely depend on how a country or market notifies the public.
A general approach is to create a search that closely matches the regulatory topic, keywords of interest for the particular market(s) of interest. Once this is done, select 'Guidance' and 'News' as the Post types to filter by. This way no results on current regulations will be included in the results. Combining the topic 'Policies and Laws' with post types 'Guidance' or 'News' will provide you with proposed changes that are yet to be made into actual legislation.
Other filters on the specific market can be added, the period of time and the known information sources that often publish proposed changes. Helpful sources of this nature include WTO Notifications and EFSA Publications for the EU.
Once the final search results best capture what you are looking for, save the search and create feeds to enable the monitoring for any new information that may come in the future.