Date: 12 Elul 5588
From: Rabbi Moshe Sofer
To: Rabbi Yeshaya
An elderly man with eye pain who has fasted every second day of Rosh Hashanah since a disturbing dream asks whether he may postpone his fast. The Chasam Sofer rules he should obtain hatoras nedarim and fast two weekdays after Tishrei instead.
Source: Shu"t Chasam Sofer OC §168