I would try and keep your lo on about a 2 hour feeding rountine at this stage. This way you are getting calories into your lo every 2 hours.
Most lo's don't actually get accustomed to the EASY routine until they are about 6 weeks of age, but it is good to implement it at an early age, as it starts to teach your lo when to E, A and to sleep independantly.
Your lo's A time at this age would be no more than a nappy change, and then swaddle and wind down for nap.
Hope this info helps.
Paula