My DD2 is nearly 8 months. As a typical 3rd baby, she mostly is dragged out on school runs and following the big ones around!
She is a really good natured baby so is very easy to entertain really. I have about an hour just with her after her nap while her sister is a preschool where we just chat and look at toys but the rest of the time she generally sits on the floor with some toys watching DS and DD1 play or she's in her jumperoo.
I sometimes worry she isn't stimulated enough as I admit it is easy to 'leave her to it' a bit as she is so chilled. Once the older ones are home there are things to do like making dinner, homework etc so I can't sit down with her much.
Am I over thinking what she needs?!