My wife is exploring freezing her eggs to delay the second baby for career reasons. Any tips?

Like what Nooraini mention, egg freezing is only available as an option if there is a medical reason. Any chance you wife would reconsider her plans for career progression and family planning? Egg freezing is still an evolving tachnology and there are procedures involved in harvesting mature eggs and considerations to think through. Perhaps it will be a good time to read up more about what it entails and whether the plans for career and family could be readjusted slightly for a best case scenarior. :)