It is difficult to know if there is a problem here or not as you have not given me their weights. If they are picking up weight and are happy and content then all is well. If they are not gaining weight then obviously there is a problem. It is not always a good idea to change formulas as that often does not solve the problem, but if you feel that this is necessary you can switch to S26 Gold.
The information provided does not constitute a diagnosis of your condition. You should consult a medical practitioner or other appropriate health care professional for a physical exmanication, diagnosis and formal
advice. Health24 and the expert accept no responsibility or liability for any damage or personal harm you may suffer resulting from making use of this content.