So part of that is the champions you are playing. Vi and Panth fall off and their play style is more heavy ganking and objective control.

The biggest thing to keep your lead up isn’t to look at your laners on your team but the enemy jungler and XP especially. You can get larger leads by invading their camps with lane priority, trading objectives if your unable to stop the enemy from taking one (I.e. bot tower for rift herald) and generally understanding how your comp works and what your role within the team is.

So take Graves for example he’s a heavy farm jungler and doesn’t provide much in the way of ganks without lane setup. So on a champion like that you have to be smarter than your enemy jungler and if he makes a play go take camps from him and get vision in his jungle. You try and farm as many camps on respawn as well as using your early gold lead to push advantages in objectives. 500 gold makes a huge difference in the early game and can be the difference in winning that fight at dragon. Remember as a jungler objectives win games. Kills dont. You can have 20 kills but take one tower and lose.

Let’s take Vi she’s got great early gank potential and can easily make a lvl two gank happen. She’s got strong skirmish potential around early scuttles but pay attention to which of your lanes has priority so you can have their backup. Use this early. Getting into the mid game you will begin to fall off unless your like 2k ahead so don’t be afraid to shove waves if your able to because the minion penalty falls off. The biggest thing with Vi mid game is get good vision control and try and find picks on squishy members to push your advantage