How long was your break? I'd suggest taking a longer one. There's nothing wrong with a several month (or even a year) long break, and it might help get you interested again. c:
I don't know if you did these things before, but you could also try going without any plot resetting, bug hunting, fancy paths, etc. this time around. Just take it really slow and let villagers come and go as they please, not bothering with dreamies or trying to make your "perfect dream town." Just play the game like you would if you'd never discovered TBT or any internet sites about animal crossing. Imagine you just bought the game and you pretty much don't know how it works..
That might not appeal to you, but if it's a new way of playing that you haven't tried before (or maybe you used to play like that when it first came out), it could give you a new take on the game and keep you interested? I think this would work for me, but idk, maybe it's a horrible idea XD
If you don't want to take a break or follow my other suggestion, I'd definitely recommend getting some friends to play with you!! If you don't have any friends who play, you could maybe convince some to? Or get some internet friends to play with you on a regular basis. The only reason I played Wild World for
years is because my sister also played and it was really fun to hang out in her town and watch it change. We used to shove each other into pitfalls. I also used to
secretly compete with her, trying to make my town and house look better than hers (I did not succeed). It led to a lot of fun and a lot of good memories ^^
Good luck, I hope you find something that works! And if you don't, that's fine too. It's not something that you can love forever...everyone is going to get tired of it eventually. You can try a new 3DS game or wait for the next Animal Crossing. Don't feel bad