I have 3 islands and 3 switches. One is the AC special edition and because I am a collector, I don't see myself opening that one!
At the moment, I am balancing 2 islands and from my perspective it is a lot of hard work!!!
It's nothing like NL. NL was that easy to play I ended up with 5 towns (had 6 3DS's, 2 of those were special edition). NL is cake walk compared to NH.
I am only utilizing 2 islands at the moment, and I am so far behind. Maybe because I am trying to begin my cycling island but NMT really throws a wrench in those plans and also I don't want to use my amiibos for said cycling island.
I honestly don't think 2 islands is worth it right now. Visiting other islands just makes it that much worse because my main island looks like a deserted island
However, I do use my Switch more than I ever used my 3DS due to various games (Zelda, Fire Emblem). So, I guess that is a plus.
Anyways I digress, 2 islands is a pain! That's just my 2 cents!