my kid is 2 months old, during day time she takes feed well,but during sleep in night she used to sleep for 5 to 6 hrs in a stretch is it ok for her to feed on demand or I should wake her and feed for every 2hrs?

A. at this stage you should feed the baby atleast once every 2 hours even in the night. not necessary to wake up the baby. just take the baby in your lap and feed the baby in sleep itself. 5 ton hours gap is too long at this age.