fearful of waking the baby/fearful that we might wake the baby
Related Translations:
生怕: for fear that; so as not to; lest 短语和例子生怕失败 for fear of failure; 生怕吵醒某人 be fearful of wakening sb.; 人们生怕这场大雪会中断铁路(运输)。 fears are entertained that the railway will be blocked by the snow