China Neodymium And Ferrite Magnets Manufacturer & Supplier 
There have been previous descriptions of how to enhance the magnet's magnetic properties, but there may be scenarios where the attraction is too strong and the magnetic properties need to be weakened or reduced, here are a few possible ways to do this.
Method 1: Increase the distance between two magnets
The attraction will rapidly weaken as the distance between magnets increases, so increasing the distance between the two is the most direct method.
Method 2: Use shielding material
Magnetically conductive shielding materials, such as iron or steel sheets, can be placed between two magnets. These materials will redistribute the magnetic field and reduce the direct attraction between the magnets.
Galvanized circular perforated neodymium magnet
Method 3: Change weak material or weak grade magnet
If circumstances permit, a weaker magnet can be selected to change the current magnet. For example, use a ferrite magnet instead of a neodymium magnet, or reduce the N52 grade to an N35 grade.
Method 4: Reduce the contact area of magnets
The attraction between magnets is related to the contact area, you can adjust the angle at which the magnets touch or only let their edges touch to weaken the attraction.
These are a few ways to reduce the attraction between 2 magnets, for temporary weakening can be done through distance, shielding, etc. I hope this helps.
You may also be interested in;