Your bodyshop should have advised when it is safe for you to seal or wax, most say 30-90 days some say straight away.
New paint is safe to polish as long as your using a pure bodyshop safe polish without any wax or sealants in it. I would look into getting some Meguiars Show Car Glaze or New car glaze to see you through till it is cured. If you have some Minor defects in the paint ( in all honesty the bodyshop should have polished it well before so I would be going back )you could use soem Megauiars Speed Glaze on it, go easy incase the paint is soft.
All this aside, some bodyshops well tell you to go right ahead and treat it as normal.