Is it harmful to give the same vegetable to my baby every day?

Eating the same vegetable daily limits nutritional variety in the short term but doesn't cause a health problem by itself. While squash has good fiber and water content, it can't alone provide all the critical nutrients for baby development — protein, iron, zinc, and healthy fats. What matters is that alongside squash, you keep introducing other food groups: meat, poultry, eggs, yogurt, lentils, avocado. For vegetables, instead of squash every day, try mixing small amounts of new vegetables with the squash to expand their palate. If they consistently refuse other foods for several days despite trying, take a break for a few weeks and try again — this is usually temporary. If weight gain is good and your doctor has no concerns, there's no need to worry.