There are a few things you can try if you’re having behavioral issues with your Siamese cat:

1. Consult a veterinarian: Some behavioral issues can be caused by medical conditions, so it’s important to rule out any potential underlying health problems.
2. Provide mental and physical stimulation: Siamese cats are intelligent and active animals that need plenty of mental and physical stimulation to stay happy and healthy. This can help prevent boredom and reduce undesirable behaviors.
3. Establish a routine: Cats thrive on routine and predictability. Establishing a regular routine for feeding, playtime, and other activities can help reduce behavioral issues.
4. Use positive reinforcement: Reward your cat with treats, praise, or toys when they exhibit desired behaviors. This can help reinforce good behavior and discourage undesirable behaviors.
5. Use environmental enrichment: Make sure your cat has plenty of toys and activities to keep them entertained, and consider providing them with a cat tree or other climbing structure to help satisfy their need to climb and explore.
6. Consider using a pheromone diffuser: Pheromone diffusers release calming pheromones that can help reduce stress and anxiety in cats, which can in turn help reduce behavioral issues.
7. Consult a behaviorist: If you’ve tried the above steps and are still having issues, consider consulting a certified animal behaviorist for additional advice and guidance.