https://metodorf.com/tests/bourdon/group_bourdon.php I used that to prep for mine, do it daily until you familiarise yourself with the 4 dot patterns they are very similar in the paper based tests, aim for about 10 on the online adult test. paper one you'll be a lot faster as you can use your finger to follow the lines, but just remember your marked down for missed 4 dots per line and also incorrect mark which when I asked if noticed and corrected does it goes against overall mark, they said they couldn't say. just try ensure not to "rush" speed and accuracy are both important and they'll say that throughout all testing.
Long as you practice the material sent for the other tests to familiarise yourself with them it helps a lot, they aren't there to catch you out rather to ensure you have the ability they require for the role, just practice and practice, only sound advice I can give