Devourer Jungler Help?

I have mained jungle for about 3 or so years, and i am running into an issue with the devourer. My two mains are shaco and shyvana, With shaco i create a lot of pressure early and end up getting 1 or 2 of my laners fed if i am doing alright. With Shyv i just farm and farm and farm and if my laners lose its their problem.

Now the issue lies where shaco is a strictly better playstyle in as far as i have seen. When i play shyv i stomp late game, but by that point the enemy laners are already fed, so we end up losing fights or hardly winning. With shaco if a laner starts to lose i can come and help and turn it our way, and even if i cant i have much more of a presence.

I dont see the effect of a late game jungler as much as i do the early one, sure shyv is strictly more powerful later in the game, but by that point your team is frustrated with you because you didnt gank, and if they begin to lose all you can do is walk up in the lane and pray their gap closer is on cd.

I am looking for advice on how to me a little more proactive with devourer junglers. hell, maybe i am even playing them wrong, but usually i just gank when they are pushed to hell, contest dragons, defend towers and cover, and farm when im not doing those things. With shaco i can create pressure and fight for objectives and create much more momentum than i can with shyv.

Thank you

Kaustarus