Latching Issues! HELP!

Im 4 ft 11" my arms are not that long. My newborn is 1 month and a few days he weights 11 pounds or even a little bit more and his 19" to 20" long. Now being that said, hes intake is pretty high 4oz to 6oz. I give him formula and breast milk. But I cannot get him to STAY latched on me. He will push himself away from my breast and get extremely MAD and cry. I use a bobby pillow but sometimes is the most uncomfortable thing 😣. And it feels like Im not big enough or my arms not long enough to hold him and it is super hard and challenging to nurse him.... 🙁😫😒😪😴😢😭😖😟 any suggestions? At the picture he is under my breast, like really? Under my breast! And he fell asleep like that...