Check out this cool little DIY stroller handle you can make for your toddler so he/she can grab while you push your stroller for “the other” baby.
Btw, everyone has been telling my friend about the Maclaren Stroller recall where it has been apparently cutting toddler’s fingers off. (Recall here)
Attach something to the stroller for your older child to hold onto, so that she feels included and so that you know exactly where she is, without rolling over her little feet. Make a Big Brother/Sister Handle out of something you’ve already got in the house.