Max, 26, has landed roles in films including Dorian Gray and Red Riding Hood and has even modelled in campaigns for fashion brands Burberry and Mango.
But veteran star Jeremy insists it can be difficult for new actors to achieve career longevity once they're no longer hot property.
He tells London's Evening Standard, "The business now tends to want pretty young people and uses them up and spits them out if they can't do it.
"It used to happen to a small extent to girls when I started. But it didn't happen to guys like it does now. Obviously, if Max wants advice, he'll get it from me. But he's going to have to find out the reality of this job for himself."