As nocturne, If you want to fight him, you need to bait out his W first or else he will just win the 1v1.

Post 6, don’t steal his Ultimate, as it will not help you much in the 1v1 against him.

He is a stronger early-game Jungler than you. Try to equal his pressure in any way possible (stealing camps, counter-ganking, or taking objectives).

Investing in early armor can be really and it will protect you in the 1v1 against him,
 As nocturne, If you want to fight him, you need to bait his W first or else he's just going to win the 1v1. Post 6, don't steal his Ultimate, because he won't help you much in the 1v1 against him. He's a Jungler earlier than you. Try to match his pressure in any way possible (flying camps, counter-gang, or taking goals). Investing in the armor early can really be and he will protect you in the 1v1 against him,