Get more sunshine. Generally speaking, strawberries planted on indoor balconies do not produce as many fruits as those planted in the open air. On the one hand, it is because of insufficient light. Be sure to get more sunshine. There should be plenty of sunshine in winter and spring. Only in this way can we blossom and bear more fruits. During the growing period, before or during flowering, you can leave it alone in summer, and you must apply more fertilizer in autumn, winter and spring, preferably organic fertilizer. The less fat, the worse the effect. This is fried melon seeds. You can put some on it or bury it in the soil. I put too much. It is especially important to note that strawberries should not be planted too deep, and it is better to expose the stems at the bottom of the leaves. The reason is not clear, but deep is not better than shallow. Usually, you can also use stolons to breed more strawberries often.