C-section with a 14 month old?

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My son is going to be 14 months old when my second baby is born. I am so nervous I won’t be able to pick him up! He is hitting his milestones pretty late, he started smiling late, laughing late, even sitting up on his own pretty late too. I have a feeling he won’t be walking by then. Has anyone else been in this situation, having a repeat c section while also having to take care of a non walking baby???