It's expensive as hell but the Doona is great for this -- the whole seat is a stroller too, it won't get you on any hikes but for running in an out of stores it's perfect

https://www.amazon.com/Doona-Infant-Seat-Latch-Base/dp/B07HML1BT5/ref=asc_df_B07HML1BT5/?&linkCode=df0&hvadid=312196223408&hvpos=&hvnetw=g&hvrand=8797233432188933925&hvpone=&hvptwo=&hvqmt=&hvdev=c&hvdvcmdl=&hvlocint=&hvlocphy=9005468&hvtargid=pla-568211620219&psc=1