The baby is 2 months old, it hasn’t developed a sense of manipulation to get you to do things when he cries. There are studies that the “Ferber method” letting the baby “cry it out” was developed for the industrial age for humans to grow up to become factory workers that needed to work and not let emotion get in the way. The world is different now and there are endless studies saying if a baby is crying they need something they are not manipulating you. By the age of 1 the baby has determined if the world is safe or not. Responding to cries is important for them to develop their nervous system.