Hello moms! I’m a FTM and my newborn is 16 days old. I had to start my little man on formula, Enfamil newborn, due to me not producing much breastmilk

For the past week the pediatrician asked me to do half breastmilk half formula to get him adjusted. Then the last 3 days majority formula and a little breastmilk.

Today at his 6am feeding I ran out of the last of my breastmilk so went full fledged formula.

He has not been able to sleep since, 6 hours later, after each feeding since 6am. He has been fussy and irritable. He starts to fall asleep and then he starts wiggling and grunting and can never actually fall asleep. He the had a huge green diarrhea poop and was wailing crying with actual tears.

Is this normal when babies start formula? Could his formula be too much for his belly?