So I had my 2nd adjustment this morning. As expected, the top wire has been upgraded to a square (section) one (in preparation for another thicker wire in the next adjustment) and the bottom wire has been further tightened to force two stubborn teeth to rotate. By the next adjustment in about 4 weeks, it should also be upgraded. The ortho is happy with the progress (except for the 2 stubborn bottom teeth) and was already talking about closing the gaps (where I had teeth extracted) in the next couple of adjustments :D. I hope this means the whole treatment will end earlier than expected (fingers crossed).
I'm in a bit of pain, but it's bearable, so all is good.