There used to be a way to synchronize DBs that were copies of one another. However, Microsoft dropped that feature because it was a really tough thing to get right.
You can do this easily for yourself, though, by first making rules that define what you can do, or set up the DB on the laptop to only allow certain actions. For example, allow yourself to ADD data but do not EVER modify existing data. If that is practical, you could selectively filter based on dates to then (a) export a spreadsheet with only the new data required for each field, then (b) import the added records from a spreadsheet to a temporary table and then (c) use an INSERT INTO ... SELECT ... FROM query to load the temporary table to the permanent table. The problem would be that you CANNOT also allow the master DB to add records if there is any chance whatsoever that the ADD process would involve autonumbering. That would lead to destructive interference.