Sleep!!!!!!😩

Anyone else’s little one being a nightmare with sleep at the moment? My little one used to have a 2 hour nap in the day and then go to bed at half 7 every night and sleep through till 7 no issues. The last month he wakes up every hour or so SCREAMING and can’t be consoled at all. He doesn’t want a bottle/dummy/ cuddles nothing- he will hit his head off his cot and scream and scream he then will be awake from 5 am and hardly slept and then wakes big brother up (his 3) 😭 I’m shattered and just don’t know what to do- I can’t see anything physically wrong with him and he does enough in the day to be tired it’s just like all of a sudden he doesn’t know what sleep it! When he wakes up screaming it’s like his in pain but gets so frustrated when I try and comfort him! 😩😢