I've co slept with my almost 2 year old since he was a baby, and it's always worked out fine. It's been lovely, in fact - he wakes me up with kisses and cuddles and it's wonderful. I'm 20 weeks pregnant, due in March and DS will be around 2.5. We have the Ikea Gulliver cot pushed flush against my side as additional space and he's been used to either sleeping in that or at least on that side. He now has his own pillow and quilt. But I want him to learn to move to the other side of the bed so the new baby can go into the co-sleeper cot and me sleep on that side of the bed again to be there to BF in the night etc.
But he's just getting to a stage where EVERYTHING I do - tiny, innocuous little things such as moving a toy an inch - is met with a wailing "Nooooooo!" He's not very verbal yet and I don't know how to get him to understand that I want him to move to the other side of the bed. I've tried several nights of moving his pillow and duvet to the other side but when he gets into bed, he just wails and moves them back.
Just to add to it, I think I'm a bit sensitive to making him feel like he's (literally) being shoved over in place of the new baby :( I don't want to stop co-sleeping - unless in the event of the new baby, he keeps waking and wants his own space. If that happens, that's totally cool, he has a bedroom all ready for him. But I don't want to kick him out the bed. There's plenty of room for all of us - the co-sleeping cot for baby, and a super king size bed. But I know it's better to get him used to sleeping on the other side now than the first night I bring the baby to bed.
I have 20 weeks to get it sorted but not sure how!