I know it must have been a tough year in your life. Every baby is programmed to adjust to its current health status. So when properly planned the child will definately start gaining weight. Having said that the 1st year is a tough time for establishing the feeds to both mother and baby as the baby is going through tradition phase from liquid oriented to more solid oriented . I need to know few more details so I can help u better.
1) what was his birth weight??
2) have u done any recent 2d echo? If yes then I would like to see the report so I can guide u better.
3) what is his current diet plan?? ( this is very important because i need to know if u r providing him with adequate calorie and nutrition!
4) is his weight gain since birth irregular since birth??
Next Steps
Frequent cold is a common feature of heart conditions , but it can be controlled if promptly acted. Give him maxtra drops 5 drops twice a day, the moment he starts showing symptoms so we can reduce his discomfort . Always keep nasal drops around since frequent nose blockage can be annoying for the baby.
Health Tips
Kindly consult so we can discuss this and try to tackle this issue which has been rightly worrying u as a mother. All the best. Keep up the spirit.