wax(carnauba) will not harm paint.
There is no cleaner agent in carnauba.
Cured paint is only down to the hardness it forms so to say not too wax or seal a fresh paint job is silly.
Would you not seal a new car? I know plenty of detailers do the full multi stage machine polish and finally seal new cars or fresh paint jobs. Paint will cure over time no matter what you do but if you want to protect it, i would advise in using a wax or sythetic sealant that has no silicone in it. Silicone is paint's worst enemy. It stops pores in the paint from breathing.
I use an ultra fine polish just to bring the shine up with little effort, then seal it with a sealant then a coat of carnauba wax. The same way i treat my car without the machine polishing aspect; that'll last 6mths easy. Just wash it whenever and apply another coat if you like.
Use citrus degreaser (or fairy liquid)on the whole frame to strip the wax right off when required.
Hope this helped