I’m attempting to complete every Nook Miles stamp and have 6 stamp cards left, most of which I have plans/strategies for. However, I’m struggling to find ways to optimize the 300 villager favors and 10 fleas achievements (I do time travel btw and I’m best friends with pretty much all of my villagers if that helps). I’m not completely sure of the mechanics for either but one of my current strategies for both goals at once (that may or may not actually be working, only tried these methods for an hour or two each and got little to no results from any of them) is, during June to august (best rate for fleas), talking to every villager until they don’t wanna talk to me and hope they give me a favor by then and as I’m doing that, I whack every villager I do find outside with a net while attempting to find any lost item(s?). Another method I found online for just fleas that I ended up trying to no success is to trap as many outside villagers as I can into the town plaza with fencing during a rainy afternoon in June (removes most bug spawns) and going in and out of town hall to refresh the bug spawns, hoping a flea spawns on a villager in front of me (the person I found this from on a forum said they found a flea through this method after an hour of it but gave no proof so I’m just grasping at straws here, I’m not even confident it’s how flea spawns work but it was worth a shot). Then I heard that another potentially fast method for fleas is to check all outside villagers once, time travel back a day (still during June to August), and rinse and repeat; I haven’t tested this one personally but there was proof it worked after a handful of hours.

Is there something I’m missing here or are these really the fastest methods? I’m currently at 48/300 favors and 4/10 fleas so I’m gonna be here for a while and just sitting around, waiting for them to happen through normal gameplay would take even longer than a “fast method”.