How do you know your meds are wearing off?

I recently started my meds about a week ago. I’m slowly picking up signs of when theyre starting to wear off. I get the fairly usual symptoms such as the sudden drop in focus, but i also start getting REALLY hungry really suddenly (im not talking a little bit of hmm i should probably eat something, im talking full ravenous).

Anyone else have any ways of telling other than a drop in focus?