OK, this is now going to be my third time trying to post a reply. The last two times I lost it. The posts, that is. I'll probably lose the other "it" if that happens again though...
Tummy time - Like all the others, Sean also hates it. At least now he just sucks on his hand while on his tummy which means that he doesn't immediately freak out like he used to. Fortunately he has always had really strong neck muscles so I'm not too concerned about it. I also put him in the bumbo seat thingie a few times a week at least which I think is also good for strengthening those muscles.
Sleeping - I don't know exactly how I got so lucky with him. My best guess is that it's because he naps so well and frequently during the day. When he doesn't nap he gets all upset and beside his little self, then he doesn't sleep as nicely at night. It's surprising to me how little time he needs to spend awake. And it took some time to start recognizing the "I'm tired" wah's as opposed to the "I want boobie" wah's.

For the most part we get 8 hours out of him every night and I'm not complaining!
Flat heads - We have lucked out on that, too. When he was first born I mostly put him in to sleep on his side (which is what he preferred) so it only took a few weeks for him to stop favoring looking over his left shoulder. Now he sleeps on his back all the time but he switches up which side his head faces.
Pumping - Just had a really bad week and a half of hardly getting anything out, which turned out to be the start/duration of my first real period since giving birth. I just remembered why I didn't miss those AT ALL! I'm only truly hoping to make it to about 6-7 months with the breastfeeding since it really is a challenge with working full time, especially since my lactation room at work (aka "Hoth") is this really creepy little cold, dirty room that I have to walk 10 minutes outside in the snow and cold to reach. And yet I'm supposed to be groveling and grateful that they even have a lactation room at all... In any event I think he's ready to start cereal soon so that will ease the pressure to produce somewhat.
He goes to the pediatrician next week so I will finally know how much he weighs and all that other good stuff. I'm still trying to remain mostly ignorant of what all his so-called milestones are so I don't turn into one of those moms who freak out if their baby is 2 days late cooing. He seems super happy, chubby, healthy, strong and playful.
Oh, and I would really recommend you to bring your babies in to the fertility clinic to say thank you. I just had Sean in another part of the hospital last week to have cystic fibrosis testing (it was negative, he is a carrier but that's it) when the fertility clinic coincidentally called my cell phone to ask me what the outcome of my pregnancy was, presumably for their success rate data. I decided to stop in, and they were so delighted to see us. They don't ever end up seeing most of the babies they help us create, so he was surrounded by a throng of lab techs, nurses, and doctors full of smiles thanking ME for bringing him in! I was especially sure to thank "whoever picked out the exact sperm" which the techs got a kick out of.
It made me think though, and I wanted other opinions. As it happened there was only one couple there waiting. But it got me wondering if couples who didn't have babies yet would be depressed/upset to see a baby, or if it would give them a hopeful feeling to see somebody from their clinic who had a successful cycle. I think I would have felt a kind of bittersweet hopefulness, if that makes sense. How about you all?