I bet that Haaland not only will continue to score goals like that, but he will also score a lot more. The main reason is that everyone is tightly marking Haaland now, which results with him not being able to score that easily, but if he can't score easily, then how could he score more?
The main reason is that after first few weeks, like maximum of 10 but probably less, teams will realize that Haaland is not their only scorer, and City is using him as bait, you fear him scoring, so others score easier. Then teams will end up defending normally, and that will make Haaland score a lot easier as well. That's how I think the season will go, first 2 months not that great, after that it is all goals galore for him until the end.
If Haaland had been the only goalscorer for Manchester City, Manchester City would never have won the Champions League trophy or last season's Premier League trophy. A team can never be so successful depending on just one person. If the team has one main striker and if he is the main reason for the win then the opponent will have only one player to target but when a team has multiple goalscorers the opponent has to plan with all of them which will result in mistakes in the opponent's plan as in the case of Manchester City. In the last couple of Champions League matches, opposing managers have planned on Haaland but other players in the team have scored goals for the team that made Manchester City so successful last season. Collective performance is the most important factor behind the success of a team.