Nervous about having my third!

Meghan
I'm 38 weeks pregnant with my third baby and I'm so nervous, not because of pain or anything but how I will adjust when we get home. My oldest has ADHD and my youngest is on the spectrum and is in therapy it seems like all the time and I almost feel overwhelmed just thinking about bringing a new baby home. I'm excited about our new baby don't get me wrong but every time I start having contractions in the back of my mind I'm thinking "Oh no I'm not ready yet!" , "how can I do this?" The transition from one baby to two babies was so easy for me but I'm so worried this time won't be the same and I will just be too tired to do what I need to do for my other babies. I'm so afraid I'm going to let them down and not be the mother they need me to be. I know there are other moms out there that do it so does anyone have any helpful advice or words of encouragement?