NO
There is no such thin as mew 3.
Mew 3 does not exist
No
Nope.
No! Sorry
There is no Mew 3.
No, you can't. You catch a mew, it evolves into mewtwo and that's it.
There is no such thing as mew three
3.
Episode 3
Nope, there isn't. Sadly...
You have to migrate mew from generation 3 as of now.