I couldn't read and run, but I don't have any experiences, just

I would invest in a sling if you don't already have one. Your new baby will be happiest snuggled up against you. I would also think about a playpen for the tiny bub, so you can pop them somewhere safe when you need to do things. Do you have a rocker? They are awesome (I wish I had one for DD) and that could go in a playpen and keep the little one happy whilst you tend to DS.

My DD is a similar age and I agree she is SO much more adventurous every day. She tried to eat the toilet flush thingy today!!

Anxiety isn't good for you or the bub...try and go with the flow and remember each day is so different and you cannot anticipate how it will be. You need to trust you will be fine...and you will be!!!!!