The plugs you recommend do fit into your ear. I don’t know if they go in any less than an aid so the OP might end up with the same complaint of wax being pushed deeper.
Here’s the mfg website description:
I need to order new goggles and a new suit, I might add these to my order and see how they work. I normally don’t use plugs when swimming, so this might take me a while to get used to.