I agree that I think the big aspect is just pushing through the first couple of weeks and seeing if you start to get more attached over time. It won’t happen instantly, especially if you had a different island that you already got used to.
I haven’t reset, but I know that when I used to make extra towns in the older games, it always seemed hard to get used to the new villagers, layout, etc. But it got easier with time. In ACNH, I was skeptical about my island when I decided to stop resetting at launch (I only reset four times, but I wasn’t sure if I would be happy with it). Now, I love my island.
ACNH is big on customization, so I would wait until you get to the point where you really start to make the island your own. Get through the tutorial phase, play for a couple of weeks past that, and see how you feel. You can always terraform and swap villagers later. For me, I think the first big turning point was adding my three villagers past my starters, and getting to lay out their homes. The next turning point was once I had my basic island layout done (villagers invited, rough pathing for getting around town, neighborhoods, etc.; I go for a rural feel, but it started to give me a sense of ownership). So set a few goals, push through the initial uncertainty, and see how you feel.