Male discus is trying to knock or push the breeding cone?

I was just wondering why the male discus does this. I saw my pair lip locking each other, shimmering, and etc. I haven't really seen the pair cleaning the breeding cone but I was wondering if it is normal if the male is trying to push or knock down the breeding cone? He moves it just by alittle but I am afraid if he actually knocks it down.

Aggressive males will do that sometimes. I'd just keep watching to make sure he doesn't injure his lady.

I have two female that do this often. Much like Bettas.