I haven’t figured out an effective way. Was running all of the subscriptions through an Excel pivot table, but I am sure someone with programming could do it a better way!
I had just copied the text from the list on the Kbin subscribed list. To be honest, it worked slightly better than doing the same for Lemmy.
I have been comparing accounts on Kbin.social and Readit.buzz and find that the post don’t populate/federate as well on the smaller instance. I generally feel like I am not getting all of the posts and certainly not all of the image previews on Readit as I get on social. I don’t get the sense that a smaller Lemmy instance has the same problem, but I don’t have a Lemmy.ml/Lemmy.world account, so i can’t say for sure.