The Emperor sweet actions cause Snow to have a wonderful morning in which he has eaten his breakfast into his room, of course, his actions weren't something suspicious since the original Su Yao has mostly stayed cooped up inside his room while usually eating either his breakfast, lunch, and dinner without showing up at the Su family dining room.
Even Xia Yue and Su Yu rarely dine together or in their own room rather than going to the Su family dining room because there is a high chance of either being poison by the vicious woman while definitely feeling awkward and uncomfortable at the whole dining experience while getting indigestion, so all of them for once has decided peacefully to eat separately with each other.
And since there is no grandmother and grandfather in the Su Family to complain about their decision, so the rules of dining together weren't strictly followed.