I sympathise re wind. DS suffers a bit but nothing like your DS does. Awful to watch/hear them in pain. Wish I had something useful to suggest.
Yes, it is a bloody long way to come. DD was very, very good. She slept for most of the first stint (timed to coincide with her nap) and we picked a service station to meet at with a play area, so she had a run around. Then portable DVD player and Peppa Pig plus a variety of snacks for second stint. DS just slept.
DS went down at 9pm and has been awake at 11, 1, and now. At 1 he screamed when I changed him, and then I realised he had p'eed so needed an outfit change, then he screamed some more. Fortunately he didn't wake DD, who is sleeping with me. I am permitted a very small edge of the bed. DS is almost asleep again, but DD will be awake for the day soon. We have lots of extended family to see, but they aren't interested in me, so will hopefully get to nap today.