thanks mummies for your kind suggestions

I would recommend glass bottles.. they retain temp better n safer as compared to plastic.. but if u wan to buy plastic then polypropylene is good...

yes.. glass bottles are available.. 
although you can buy anti colic bottles like that of Chicco.. and I guess almost all the bottles are bpa free.. just change the nipples at regular intervals like once in a month (depends on which brand you are buying).. and sterilize bottles before every feed..

but how steel glass to two month old baby,

Don't use bottle use small steel glass

milk feeding bottle for babies,which material made up of should i buy considering baby health as well?pl. suggest