NDGOLDEN, I cannot speak from firsthand experience, as few can, but I do have some good friends who had triplets via fertility treatments. I know the first year was hard for them to adjust, as it is for all parents with their first babies, but much more so in their case. My wife is pregnant with our third currently, and I know the first go round can be the scariest and a little more difficult due to simply learning the ropes.
From what little involvement I did have with the parents of the triplets I knew, the two things that stood out to me was:
1. Ask for help! Get as many people as you can to help you two. Don't be afraid to ask for help, and don't kid yourself thinking you can handle it. As parents of two boys my wife and I need help from time to time from family or friends. All the more in your case, especially for the first year. Sometimes you and the misses are going to need a "date night" for sanity sake, and to just relax.
2. Schedule, schedule, schedule. The most significant thing we have found in our time with our boys is keeping them on a regular schedule whenever possible. When we have not for whatever reasons, life is much harder for them, and for us as well. The couple we knew actually had a written out schedule/planner for their triplets, and followed it as best they could for their sake, their babies sake and for the sake of those they enlisted to help them.
I think like most things new to us, its tough at first, but once you find a rhythm and schedule it becomes easier, though not a cakewalk.
I have never been in your shoes in expecting 3 all at once But I have been a dad of 2 and soon 3 for going on 5 years now. I can say with all honesty, it is work, but the kind of work I would not trade for anything. My boys are totally worth ever ounce of work my wife and I put into them, and they bring me lots of joy for the work.
Praying for healthy pregnancy and delivery for your wife, for peace of mind and a game-plan for you both. And for the joy that comes with being a dad and having your own flesh and blood to follow in your steps. Peace brother
P.S. One resource suggestion I would make is the "Baby Wise" resources. My wife and I used them each of our boys and they were so helpful getting them into routines. Our boys both began sleeping through the night by 2 months. That is their claim to fame, that the 95% plus of kids will sleep through the night by 2 months if you follow their method. Everyone has their own cup of tea with these things, so obviously you all will have to find your fit. But I would highly recommend Baby Wise. Here is the first book for newborns.
https://www.amazon.com/Becoming-Bab...UTF8&qid=1518455496&sr=8-1&keywords=baby+wise