Even though twins have the same birthday and may look the same, they are separate individuals with different likes, dislikes and needs. Although you should address your son's growth concerns with his pediatrician, it has been my experience with twins that one is always ahead of the other in some ways, although it can be a very small difference.
Also, infants born at 30 weeks have issues not often seen with the full-term infant, and sometimes those issues can last for a few years. My first child was a 29-week preemie who finally corrected at around age 5.
To encourage your son to eat, observe yourself during meals:
- Do you praise twin B for eating well but show irritation to twin A for being fussy?
- Or, do you give a lot of attention to twin A, perhaps attention that he thrives on? Is it possible his vomiting episodes occur when he wants to draw attention to himself?
- Do you serve the same foods to both children or do you always include something you know twin A will eat?
If you think you may be doing any or all of the above, you may find that changing the mealtime atmosphere will help solve the problem. If not, speak to your child's physician.
Our parenting advice is given as suggestions only. We recommend you also consult your healthcare provider, and urge you to contact them immediately if your question is urgent or about a medical condition.