Bex, hope DD is better soon

Once we went to 12 hour days, I just went with the flow depending on what we were doing that day, but there was always 'quiet time' in there somewhere. Just watch out for her nodding off if you don't want her to.
Dedicated Mum. Having been right through the 1-0 now I can talk with some hindsight, and I know for sure that at your DS age, our DS was most certainly UT at BT. His behaviour was very similar. If he isn't ready to drop the nap (you're the expert on him) then I would cut the nap to 30 mins max, as a first port of call. The BT antics IMHO are UT without a doubt, BTDT. And we have had the NW. I put the NW down to me staying with DS for snuggles as he fell asleep and retrained with WI/WO and GW several times. Since I pushed him to 12 hour days with no nap we NEVER have BT circus, and even though I sing to him and he falls asleep while I do this, we no longer have NW, and he sleeps 12 hour nights through, it took us 2 months to get to this stage though. He falls asleep alone at my Mam's every time, so he can IS, he just loves Mammy snuggles at BT and so do I.
Hope this helps. Good Luck.
x.