You will get a few different answers. I tried not to touch mine very much. I didn't start touching mine till they were a few weeks OOP. It just makes it easier on the mommy for us not to interfere. Only touch them if you think something is wrong but also read up on this website:
www.suzsugargliders.com/handraisingajoey.htm#62316694
this is a just in case thing. Make sure you know and have the supplies ready.