Can we boost the slow starters in jungle already?

Getting a little annoyed with the quick starters in jungle who just can duel anything they like, and just win the game early. I feel their should be some sort of early/rune build to the slow starters like Amumu, to withstand a Lee/Shyv/Xin/Vi/Sej/yi/etc.

I do main Amumu and enjoy playing him, but he is a mid game champion. The thing is he just permanently invaded by every single meta jungler out there now.

I've tryed anything on rune pages, nothing is working to duel anyone early. I do my best to counter gank, ward my jungle to know where ennemy is, but still I lose alot of time when they just take my camps.

I just wish there was something out there that can help me "early" with Amumu, any sort of alternative, to do better.

Any thoughts?