No, you cannot since RS-on babies are considered basic Pokemon and not the same as the old "Baby Pokemon". A good rule of thumb is: If the Pokemon does not have the text that specifically states one must flip a coin, then you do not flip a coin.
You are allowed to evolve the baby Pokemon first turn through it's poke-power. If that is an illegal move (like you attached Cessation Crystal first turn for some reason), then it is not possible at all.