he is 4 months old and will only go to sleep sucking my or my husband's finger. he hates all the dummies i have tried and spits them out. i know you will just say stop giving him your finger to suck, but sometimes it's the only way to calm him down during the day too or prevent him going completely hysterical for up to 2 hours (we have tried that). does anyone have any suggestions how to encourage him to suck his own thumb or finger, or of a dummy that he might take?