DS is 28 months old and has been sleeping through the night since he was just over 2. For the last month, however, he has started waking during the night and literally SCREAMING when we go in to lie him back down. We were just going in when he woke up, checking he was dry etc then 1st time say "sleepytime" kiss lie him back down and leave. 2nd time, same again. 3rd time saying nothing, lying him down and repeat until asleep.
This no longer works. Each time we go in he gets worked up into a frenzy of screaming and squealing until he starts to hyperventilate and gasps for air. He also starts banging his head on the cot bars shouting "bumped my head!" so we basically have to pick him up.
It is awful - we are all sleep deprived. OH taking it out on me, I am wishing OH had helped me when I made constant attempts at sleep training when DS was younger but OH would just pick him up as DS would then fall straight back to sleep. DS is grumpy all day and runs out of energy falling asleep in his lunch/dinner/in the car.
Oh, DS still has a short 30 min nap at about midday or he falls asleep at 4pm. He goes to bed at 7pm.
Please please help. I have read other sleep threads but there doesn't seem to be one for the case where DS is physically harming himself banging his head on the cot bars when we don't react to his screaming.
TIA
I feel like a completely shit mum