Conte should not think of winning the league buf let him try and finish on first four on ghe table so that if that's possible, he can focus on winning the league next season. However, this deoends on how he improves the team performance.
I fully support your opinion and logically it is impossible for Conte to give Napoli the Scudetto title in a short time and only rely on Lukaku. Conte still needs a lot of time to explore the right strategy to produce stable performance and I am sure that even though Lukaku will not be in accordance with the coach's expectations, Conte must have a very appropriate alternative. The reason I say this is because he is a professional coach who already has a lot of experience. So he will have no difficulty in improving the performance of the Napoli squad as long as he is given the opportunity to prove himself. Although it is too early, I have a prediction that Napoli can achieve better results than last season.