Spill proof straw up

S

My son is autistic and almost 5,he still uses a sippy cup (360 cups) and he recently learned how to drink from a straw.

Here is my issue

Most cups require ALOT of effort to get the drink out or to bite the straw when sucking.

He can't do this,he doesn't understand.

I did find one munchkin brand but the straw was so flimsy he chewed holes in it🤦🏻‍♀️

Are there any spill proof cups that don't require effort? Lol