post baby and my husband doesnt want to have sex

Im 4 months post having my beautiful baby girl. My husband was not really into sex when i was pregnant and now that baby is out he still doesnt seem interested. i can literally count on one hand the amount of times weve had sex since new years eve. ive spoken to him multiple times about it and he uses me being tired as the reason why even though i never complain or say anything that would suggest i dont want to be intimate. its not just about the sex though theres a complete lack of intimacy, i feel like were just really good friends having a baby together. im 26 and hes 28 and weve been married a year, i just dont know what else to do. any insight or suggestions appreciated.