Son keeps fighting his sleep

My son keeps fighting his sleep. He gets extremely fussy when I try to put him to bed at 9 or 10. He keeps tossing and turning and fidgeting so much. How can I help get around this? He’s been constant waking up at 2am-5am just crying for a whole hour, and I have no idea what he wants. I try to cuddle him. I try to feed him milk. I just let him toss and turn till he’s comfortable, but he just fights his sleep all the time. He’s already 1 years old and a month. Anyone have any tips? It’s stressing me out. I work early full time. I wake up for work at 6:30-7 am and it tires me out when he wakes up in the middle on the night crying so much and refuses to sleep at bed time ☹️