Rice rolls, glutinous rice noodles, whole grain cakes...are they breakfast in the South? How do you feel about northern products? The taste is mainly southern, which is a very strange combination.
The market for breakfast is huge, but the threshold is also very low. The location of your store is in an area with a flow of 400,000 people, which proves that the business district was chosen correctly.
However, the business is not good, mainly for two reasons: first, the product is not favored by consumers, which is also the question I raised above; second, the publicity methods are not followed up, and breakfast mainly relies on word of mouth. The effect of spreading the word among neighbors is obvious. Only relying on old customers to develop new customers is the best way to promote breakfast.
You can try to improve from the above two aspects and adapt to the actual situation.
I wish you a prosperous business