Is it permissible to repeat the Ru'yah Shar'iyyah for a fourth time due to not recalling the appearance of the fiancée because of her shyness and the short duration of the sitting?

It is sunnah for the suitor to look at the woman he intends to propose to, and to repeat the gaze if necessary, in order to foster affection between them and avoid regret after marriage. The purpose of this is to ascertain her appearance, and this is not limited to a specific number of times.