>>58218512
Only one way to find out.

Also another questions:
>Is the only altered property of a shrunk pokemon its volume (so its mass stays the same)?
>If so, would it be impossible to have heavy or multiple pokemon on your team on hand?

As an example, Onix weighs 240kg, so a shrunk down Onix should weigh the same. There's no way a regular person - not to mention a child - could carry that much over an extended period of time (unless humans in the PokéUniverse are gifted with unlimited inventory strength).

Meaning if you don't want to end up immobile and crippled, you'd be limited to light and unevolved pokemon and having less mons.