Hi welcome to H.C.M.Forum. some children will have such tendency to struggle for breath.
if physiological recovers as the age advances. mther causes are trachio bronchitis
due to allergy
here baby cries due to suffocation. or hole in the atrial septum.
i advise you to exclude a.s.d by consulting pediatric cardialogist.
besides you dont allow the child to cry for long time. start veinig
food as early as possible. dont worry he will be fine.