Discours rapporte and Imperatif help!!

okay i have doubts:

Il me dit<<Si tu as le temps, viens me voir>>.
Il me dit si j'ai le temps, de lui venir voir.

Is this correct? I feel like something's wrong here, it's the lui's and eux that gets me everytime..

Mes parents me conseillent d'être sage et d'avoir de la patience.
my friend said its Mes parents me conseillent <<Sage suis et aie de la patience>>

I literally can't understand this one.. I thought it was <<Sois-tu sage et aie-tu de la patience..>>

I'm not great at imperatif either, how can i practice this up?