He is still young to be introducing too many solids, particularly in light of his reflux problem. Offer him foods that are sensitive to the problem, yet still encourage him to swallow successfully. Foods that naturally flow to the back of his throat will help elicit the swallow reflex and help him get used to swallowing. For example, mix a little formula into the baby food if they need to be thinned. Adding a little peanut butter to whole milk vanilla yogurt makes a kid friendly, rich food.
Avocados are a calorie rich vegetable also high in vitamins.
Try pureeing meats and mixing with a rich broth to thin down to an acceptable consistency. A pediatric dietitian may also be of help to you. Thank you for writing. You should not rely on this information as a substitute for personal medical attention, diagnosis or hands-on treatment. If you are concerned about your health or that of a child's, please consult your family's health care provider immediately and do not wait for a response from our professionals.