I had the same concern going from 2 previous FSI engines to the TSI. Both my FSI GTIs (06 and 08) would consume plenty of oil when driven spiritedly, which was quite often.
Good news for me is that the TSI does not consume a drop of oil. Even after a k04 with full bolt-ons and running 0W-40 weight, the oil level remains the same for the 3k intervals I do.
But of course every car is broken in differently, and I remember there were some who said their FSI did not burn any oil neither. There might be people who have a TSI who burns oil, but I have been monitoring this forum and it doesn't seem to be an issue like it was with the FSI where every so often there was a thread about oil consumption.
As far as breaking it in, I just drove it like I drive it now; ensure is fully warmed up and let it visit high rpms every once in a while.