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Seriously, I had the exact same fears nail me when I was 35 weeks pregnant with DD. My DS was 28 months then, 29 months when DD arrived. We, too, had just gotten into a really good groove between the two of us. And then, DS went through some really bad sleep interruption. He was up 4x a night EVERY night SCREAMING from approx weeks 35-39 of my prengnacy. As if being THAT pregnant wasn't hard enough! And when DH left for work in the morning, it was all I could do to stay awake, and not bawl my eyes out. And I started wondering, what in the world happens when DS is clingy and sleep deprived and whiny and exhausting and I'M sleep deprived and exhausted AND there's a nursing newborn to care for?! I was sure it was impossible.Â
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When DD arrived, things started 100% smooth. The first week was cake...... DH was home! Haha. But the night before he went back to work, it was panic attack time again. And it DID take a really rough week or two for DS to get used to splitting my attention during the day, but soon enough we worked it out. His jealousy turned to regular frustration, and the frustration faded and turned to amusement, and the amusement turned into an amazing helper/big brother. His #1 activity these days is talking to, watching, playing with, talking about his little sister! She is 3.5 months & he is 33 months. As for the extreme neediness, my DS was the same way. He has really grown out of it in some ways since DD arrived, because he's so interested in being the big brother and proving all the things he can do "all myself"Â
. At the playground, he still needs my assistance, and I just help him as I wear DD. Even sometimes climb up there myself and take DD down the slide in the sling! You know, real supermom stuffÂ
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Also, when DH gets home from work I try to REALLY make things all about DS for a little while. I let him help me cook dinner and "serve it" and DH holds DD while we eat so I can focus on him. After a few weeks, you can master the "everyone in the car" adventure. I toss together a bag of their needs, strap DD in her infant seat, put on DS's shoes, get him in his seat, snap DD in, & off we go. I typically nurse in the car when we're out  - not because I have an issue with NIP, but because it gives DS a place to be strapped in & have a snack while I'm doing so! It sometimes works with DS in the stroller, but he's sort of become houdini with that thing. There's a million little things... it's hard to say how it all works out but it just does. Your mothering instincts just sort of stretch to cover them both.Â
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All of that said, I STILL have bad mornings & I get mad thinking about DH's work... getting coffee in the AM, talking to adults all day, working outside, and coming home to his family who has missed him so much they are suddenly angels! It's just an emotional thing and realistically I know he is bringing home the income, and that he'd be here with us if he could. Normal, normal, normal.Â
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Congratulations! You will love having two. Best wishes for a healthy delivery & transition!