I feel so helpless my 1 month old is

Constipated and has been since he was about a wk old

He was on Similac neosure , than enfamil infant now he's on enfamil gentle-ease And I tried to breast feed but I couldn't produce enough to keep up with what he needed.

My son's Dr told me to give him pear juice watered down , mommy bliss Gripe water

And the gentle. I even tried apple juice BABY JUICE OF COURSE

He's pooping little balls , green , and he pushes pushes and pushes. And only has little balls. I tried qtip thermometer and holding his legs , using a baby wipe and pushing it on his butt it helps but who wants to undo there baby's diaper and push there Butts with a baby wipe and wait he only had a good poop the 1st 2 days he was born

Help and advice please