Countering Miraidon??

So with Miraidon being the newest Pokémon to enter Unite, has anyway picked up a way to counter his range? The longer you hold his charge beam the farther it goes, so you cant even run out of it. Playing a defender last night, and in the goal zone - I was defeated within seconds against him alone. Imagine fighting two or three people like this. And with the matches playing left and right - and he can move while using the charge beam, you cant get close or run away. Even if you try to go father into your zone to even heal with berries, you’re done before you can react. It seems to be too much. I love the game but this has been killing it for me.