Betta Fish: How much screen time should my betta get?

I just made him his own Crunchyroll profile and he’s watching Frieren, but I’m worried he’s going to stop wanting to do normal fish things if I let him watch too much. Back when I was a kid, fish played in vases. We didn’t have fancy smart phones, just glass pebbles with cold water and sadness. He doesn’t know how good he has it.