Fetching details from the dictionary...
to be moderate in; to be temperate in; to not do too much of
to refrain (from doing); to withhold (an announcement, comment, etc.)
to be beside; to be close by
コメントを差し控えた。
I refrained from commenting.
個人情報に関わる質問は差し控えてほしい。
Please refrain from asking questions about personal information.
会議の詳細については公式発表まで差し控えている。
Details about the meeting are being withheld until the official announcement.