He needs his meds

He has a heart problem and is on medication twice a day. He’s probably just asleep somewhere in the shade but it is 29°C here and I’m worried. I will go out in the garden and call him, but I need to be careful as I’m unsteady on my feet. Why does this have to happen now. He’s due back at the vets tomorrow for a checkup. My other boy cat has probably moved out. He only comes home every few days and turns his nose up at his food. My female cat is also out… Maybe they are off playing together!