breastfeeding and NO APPETITE

i’m breastfeeding and want to breastfeed for as long as possible but i know i need to continue with keeping my calories up !! i’m 2 months postpartum and i have a hard time eating i eat maybe once a day and i want to make sure my baby is getting all the nutrients he needs i want to cry cause i can’t eat !! i lost weight i’m back to my pre pregnancy weight already which was 116 i’m exhausted all the time idk what to do , someone help please !! i wish i hungry all the time