After weaning, is it better for babies to drink formula milk, fresh cow's milk, or goat's milk?

Patient's question:

Main symptoms: Not eating well
Onset time: Recently one week
Laboratory test results:
Previous treatment history and effectiveness: Just took one day of oral solution of gluconate of calcium

Doctor's answer:

After weaning, it is decided that formula milk is definitely better than others. The baby's gastrointestinal function is still not fully developed, and only consuming formula milk can help with digestion. If the baby is not eating well, you can have a few trace elements tested at the pediatric hospital's health department. Supplementing what is lacking will also stabilize the appetite. It is advisable to feed the baby less snacks, and yogurt should be consumed less as it can interfere with the baby's appetite. The complementary foods provided should be diverse to stimulate the baby's taste buds and enhance their appetite.