Am I creating a monster as my fiancé says

My daughter is due in 6 weeks and I think my son can sense it and needs mama constantly.

He is two now and has been an amazing sleeper since 3 weeks old, we give him milk before bed, put him in his room all lights off with sound machine and he’s out from 8pm-8am.

But recently he got SO clingy to me, so I started cuddling him in my bed letting him fall asleep on me still by 8pm and then I put him in his bedroom and he’s still out for the night. My fiancé said I’m creating a monster by doing that but if he’s still falling asleep and sleeping through the night in his bed what the issue with mommy cuddles to fall asleep?