Toddler NOT SLEEPING😭😭😭

Anyone else havin this issue? He used to be such a good sleeper, would go down at 7:30 every night no problems and wake around 8-9 am every morning. Now he has the biggest tantrums to go to sleep.

Will scream the house down, refuse to go in his cot, scream and cry and work himself up something terrible until we bring him downstairs with us. We will attempt to put him back down all night and he just won’t. One of us literally has to sit with him on the sofa until he passes out.

I really don’t

Know what to do, we also have a 8 week old so beyond exhausted 😭😭😭