Are there some secret sliding events that I'm not aware of? If not, I'm not sure where 29 German medals should come from?
My predictions:
Luge: Will be harder to medal than in previous Olympics. I hope for one medal in each event (Women's Singles maybe 2), so 4-5 medals
Bobsleigh: Also one medal in each event, the 2-athlete-races may result in 2 German medals each. 4-6 medals
Skeleton: After 3 years of dominance during the Olympic cycle, the women somehow lost their dominance. Hopefully, we'll see the first German skeleton medal for a man. 0-1 medal.
Snowboard: Hopefully, one medal each in the PGS races and good chances in Men's SC. Hard to predict results here (except for Ledecka winning of course). We improved in the freestyle events over the last 4 years, but medals are unrealistic when the best North American athletes are present. 1-3 medals.
Nordic combined: Has been a powerhouse over the last decade, but it will be hard to get Individual medals this time as Riiber and Lamparter seem to be save bets for a medal. A team medal should be relatively save (even Gold is not unrealistic). 1-2 medals.
Ski jumping: Hard to predict without no foreign athlete ever made a jump in Beijing. Hopefully, Geiger and the Men's team are able to get a medal but that's far from being save. 1-3 medals.
Honestly, these are all realistic medal chances in terms of probability. Of course, surprises are always possible (Dürr or the men's speed team in Alpine skiing, men's Ski cross team, Hennig in CC skiathlon/10km, Men's hockey team, Biathlon men's relay) but they all are no favorites for winning a medal.
Counting the optimistic scenario's medals from above, Germany would end up with 20 medals.
However, there is a high possibility that Germany will fail to reach the threshold of 19 medals from 2014 which marks the historic low since reunification.