Both my dds were (are!) intense Mommy's girls.
R was nursing to sleep up to when A was born. Somehow she magically started going down okayish for dh when we needed it to happen. I still nursed her down for naps - I'd get A down, then get R down (hopefully before A needed me again), then get A down again (hopefully before R needed me again). Eventually this led to R giving up naps early, but it all worked out well enough.
And A was still nursing down when J was born. We kind of shuffled kids around - dh and I would take turns holding J as he got R down and I got A down (still nursing to sleep). Then we transitioned to A falling asleep leaning against me on the couch (this was unplanned, btw, just sort of happened). Now I sit with her on the bed, holding J as needed. Fortunately J will go to sleep for daddy (first baby who has), so I usually don't need to get him.
In any case, we just made do - didn't do much planning or anything, just figured things out when the time came - and it has all worked out fairly well
.