Ds is 11.5 months and for the last 6 weeks has been a nightmare sleeper. He just repeatedly sits up in his cot and I find him crying and hopeless in the dark. I lie him back down and he usually goes straight back to sleep but 20 minutes later there he is again. It happens all night and no one gets enough sleep. The only thing that helps is co sleeping but I don't want to do that. I am currently 30 weeks pregnant with baby 2 so desperate to get ds into his cot and sleeping through at least a few nights a week.
Will the sitting up thing pass, short of holding him down I can't see how to stop him! It's been 6 weeks so surely he's bored of it by now??
Advice appreciated.