est-ce que tu etudies trop

oui, je etudie trop

is this right?

It's correct, with minor corrections:

Oui, j'étudie trop.

Note the "élision" from je étudie to j'étudie, and the spelling of étudie.

thank u

You're welcome!

Yes, that sentence is correct! But if you meant to ask, "Am I studying too much?" in French, the correct form would be: "Est-ce que j'étudie trop ?"