Hi. My partner and I have 14 month-old fraternal twin boys. She gave birth to them, but I'm the SAHM. We were both home until they were 3 months old, so that helped, and since she's gone back to work, the boys and I go see her at lunch every day for them to nurse. Before my advice, I have to say I really envy that you are both lactating. (Rereading your post, I'm assuming that, but if it's true, that's awesome.) I comfort nursed both boys for the attachment and still do rarely as needed, though they are less interested now.

OK, on the guilt thing. That's a hard one. How I've figured out dealing with that is really remembering and thinking about them as two separate people with two different sets of needs. Sometimes one needs me more than the other, so the best and less guilt-inducing thing to do is to attend to/hold that one. Sometimes they both cry and I hold both of them the best I can. Sometimes I cry too, though that's happening less and less.

As for doublewearing solutions, I have only done double wearing with them as bigger babies -- Ergo front and back. I take an Ergo every where we go in the stroller though in case someone needs it (again, trying to let go of the guilt). Now that they can hold themselves up so well, it's pretty doable to Ergo one and hold the other for a short period (both on the front to walk to our car for example).

Have you tried nursing both of them at once? Don't know how that would work with two in different developmental stages (the older one grabbing at the younger one, for example), but my partner still double nurses frequently which seems to help on the who gets attention issue - though doesn't stop one of them from wanting solo time with her now and then. She recognizes that need and gives it to the one who asks for it when possible.

Finally, do you cosleep? We do (king + twin on the floor) and I think any lack of attention we feel like we give them during the day because there are two of them we can make up cuddling all night long. Now they are in month 2 of marathon teething (woo-hoo!), so the cosleeping seems like a total savior on being able to comfort them through the crying wakeups without ourselves having to get out of bed.

Hope this helps.