PP Depression

I’m trying so hard not to go down that route. For the most part I am fine but my baby has been so fussy the last two weeks. I’ve tried switching from breastfeeding to formula, increasing feedings from 3-4 ounces, baths, swaddles… anytime I’m wide awake baby sleeps just fine, if I try to sleep while baby sleeps, he kicks the entire time or moves around or cries until I’m awake. Anytime I put him deep to sleep and try to slip away to do anything for myself such as pump, he just screams. It’s just me by myself and hes making it very difficult . What can I do to calm him?