i) Are there any traditional chinese medicine that we can give to him??
for this, i think you better seek for a reputable traditional chinese medicine sinseh for advice.
ii) Will the delay in recovery affect him in the future??
for cough, it usually takes at least 1 week, sometimes 2 weeks to fully recover for babies. even AFTER they recover, you still can hear the loud phelgm sound. the phelgm will probably go around abother 1 week after the cough fully recover. as long as he seems better, is okay.. unless his condition totally didnt improve or even get worse, then should bring to the pediatrician again.. it takes time for a baby to fully recover from cough/flu, must have patience =)
iii) Does changing of med at such a young age affect the growth of the baby??
changing medi? you mean the same doc change for him? i mean, both are western right? shdnt be a pro. dear son 1st fell ill when he was 2mths old, after that, continously 3 mths, keep fall ill. everytime must change medi. lets say this time pediatrician gave him this medi, 3 days later got worse, we went back and pediatrician change to another medi..