ChrissyT- Don't feel guilty bout not letting bubs cry. I've read that in first 12 weeks babies cry for a reason and they are not being manipulative cause they don't know how. One book I read even pointed out how would we like it if we were so upset and people said leave us to cry in bed. I thought then I'm not going to listen to people about getting into "bad habits" and if my bubs needs a cuddle to sleep or wind down I will give it.
Mind you there are times when they don't stop crying and you do need to leave them for 5-10 mins for your own sanity.