I had nausea with larger doses of novorapid in the early days (large doses for me are about 3 units). I used to take it in 2 shots about 30 mins apart which helped. 5 years down the line I don't notice any nausea any longer so hopefully that means the body adjusts.
Yes it's hard. On a day where I'm sat in front of a laptop I can get BG rises even without food. My day is split with physical activity am and pm so I can't even always correct for those rises without horrendous hypos the minute I start to do anything vaguely physical!
I'm not sure if LADA makes BG control harder. A friends teenage son was diagnosed T1d last summer and has none of the issues I do. His carb counting actually works and all the increase / decrease instructions for exercise, illness etc the NHS suggest work for him whereas they are total nonsense for my body