Jungling : Being ahead but your teammates are behind.

Played as volibear in draft today and things were going well, got first blood, got successful ganks early into game, etc. noticed my bot lane was struggling and i started to camp and got some kills. after that, i thought that bot lane was gonna go more smoothly but i was wrong. Our nidalee "supp" had 0 wards and we had no vision control and they proceeded to feed the enemy Quinn. Mid lane just ended up dying because of face checking and getting caught out. Top lane just made some bad calls but thats not to say i didn't either. I tried to give the kills when i ganked but whoever i was ganking for just let me get the kill and that prevented them from snowballing.

Can any of you give me some tips on how to pick the game back up when you're ahead but everybody else on the team is behind?