Transitioning into mid game as Darius

Easily my favorite champion and currently my only level 7 mastery, but even then there's a particular trend I've noticed on Darius that seems to be confirmed on Champion.gg : That he's stellar early game and fairly good late game if you build tank, but has trouble during the mid game particularly at the point where you've won your lane (because you're Darius), but don't have your Dead Man's Plate and Spirit Visage completed making it difficult to tank. I mean, I GUESS you could just sit at the mid or back line and just wait for an opportunity to dunk someone who's low health and try to set up a dunk chain, but that seems to be difficult particularly because I don't have Dead Man's yet and am very easy to kite (It's become even harder to do this recently for some reason whether it's because of medication or tilt since my reactions have been slowed to the point where I miss most of my pulls in team fights and either dunk too early or too late and don't get my Noxian Might).

So my question is this: Should I still be grouping up for teamfights after I've won my lane and just git gud with my reflexes, continue pushing my lane and hope that this causes the enemy team to have to send one or two people to deal with me that I should be able to deal with by myself if one of them is squishy until I have my core built (Possibly farming the enemy jungle as well), or something else entirely?