maybe put a weight on top like a book or 3, just so long as it doesnt block the ventilation
I couldn't imagine trying to monitor diabetes in a animalgod bless you there! I have a service animal which is a cat, she can detect by smelling my breath if my sugar is low or high and will alert me or my family. I can't imagine what a struggle it must be with an animal, I can barely keep my A1C right. I will pray that you guys get some management for the little guy, 500 would kill me so idk how that feels for a cat? Bless your heart
very sorry to hear about your grandfather