My understanding believe kbin federates with three rest of the fediverse, (activity pub?) including Lemmy and mastodon, but not necessarily the other way around for their users.
From here, you should be able to see and comment to users on Lemmy insurance, as long as they are not blocking federation with your kbin instance.
Yeah, after a few days on a Soylent diet, should enter reduced pooping mode. Since people only poop every few days I believe.
And for the record, you don't have to drink a while bottle for a meal. Can nurse a single bottle throughout the day.