老师约了meeting，老师不确认时间

It is very likely that I will be recruiting new students for fall 2021.  I will be happy to discuss with you to explore your interests and qualifications.  I am pretty tied up these days. If possible, maybe we can have a discussion on the week of 11/16-11/20, if you will be available?  I am in general available in the morning (before 11AM EST) or late afternoon (after 5pm EST) on Monday, Wed and Friday.  Please let me know a good time for you on those days.

老师跟我发完邮件，我看到后就回复说这些日期的下午都可以。然后老师都没有回我，我又发了一份，他还是没有回，他不会突然决定不meeting了吧。

等了多久没回你呀？老师也说了最近时间很紧，应该在忙吧。礼貌的做法是等一两天没消息就发个follow up email提醒一下。

应该是比较忙吧，最近有些学校final，事情估计很多

美国人看邮件很勤快的，尤其是学术界，更尤其是学术界的华人。
大概上两天不回复你，就是看到了你的邮件但是不知道咋回复。