At 2-3 month as of age when babies get adequate milk, they can sleep for 5-6 hours at a stretch. You don’t need to wake him up and feed. Weight gain and amount of urine passed are indirect indicators of adequate milk. By this age he should have gained a minimum of 2 kgs from birth weight and he should be passing atleast 6-8 urine per 24 hours. If that is there, nothing to worry.
Next Steps
Visit your pediatrician in case any doubts
Health Tips
From birth to 1 year you should visit your pediatrician every month for well baby clinic. And you should note down all your queries and ask him. During each visit he will look for his overall growth and development. In this way any problem can be detected early and appropriate treatment can be done early.