Have Cat Questions? Ask a Cat Vet Online.
I am sorry to hear you are worried about Gizmo. My name is Rebecca. I am a veterinarian and will do my best to help.
Losing balance and falling as you describe could be due to different things. I am glad you checked his blood sugar and that it is normal. This could be from pain, weakness, anemia, a blood clot, or something that is affecting his spinal cord. Is he still eating and drinking normally? Any vomiting?
First I would check his gums to be sure they are a normal pink color, not pale. If he is pale, then he may be weak and anemic.
Next I would do things only a veterinarian can do: listen with a stethosocope, palpate his internal organs and lymph nodes, feel his pulses and check his reflexes. That is the best way to start to figure out what the problem is and the best way to treat.
Until you can get him to a vet, keep him quiet, keep him away from jumping, and keep him eating. If his gums appear pale, he should probably see a veterinarian today. Let me know what else I can answer
I hope you were able to see my answer. Let me know how his gums look and what else I can answer.
How is Gizmo doing? Was my answer helpful?