This is the first time I’ve used mumsnet to ask a question, so please be kind 
I’m trying to find some other mummies that can help me, as my 4 month old boys sleep disturbance has got me at my wits end!
So basically...... he has always been a great sleeper, slept through (6 hours) from an early age, but up untill the past two weeks he has been terrible. He goes to bed at 7-7.30, but then he cries every hour, sometimes every half an hour, all night long!
Now he doesn’t wake up when he cries, he just cries in his sleep, I have to go to him, pop his dummy back in and turn his Ewan sheep on, and he quietens down and goes back to a deep sleep, I understand this could be worse, but it’s literally every half an hour that I am getting out of bed and putting his sheep on. I can’t survive off broken sleep, especially when he’s then up for the day at 6.30am! I really don’t know what to do anymore, is there a reason this could be happening? I’ve tried absolutely everything, such as lavender oil on a muslin, changing the room temperature, giving him more daytime naps, different bed times, etc etc. Please help 
Thankyou