Dunno, but if you find out, let me know, because we have the same issues here!
I'm the only one who can get Nat to sleep at naptime or bedtime most of the time at the moment, which is gonna be a problem as I teach music lessons 2 nights a week from home while DH looks after the girls and I can't teach while she's going to bed. She'll do better overtired from being up too long while I teach with her on my lap than she will going down for DH screaming bloody murder so loud I can hear it above the music and driving the older child around the bend....
I keep wanting to have DH and I do a nap routine together with Natalie, but there's this preschooler who keeps demanding attention..... :roll: That's what I would recommend, having him there a few times while you do the routine so DS is used to DH being there, and then letting DH do everything BUT the holding/putting down part, and then gradually letting him take over more and more as DS lets him (assuming DS
does let him :?).
In the meantime, it IS natural for babies to lean more toward one parent or the other. My older child is more of a Daddy's girl (although lately you wouldn't know it, as she wants as much Mommy attention as the baby gets and then some :roll:), but Natalie will quiet the moment I hold my arms out to her; DH is really put out by this AND by older DD's behavior toward him these days, but someday soon she'll be ignoring me and flirting with him again. *sigh*