A.R.
I also have a 4 mo. old, and we face similar problems. for all of my girls this worked beautifully. now that it's starting to warm up here, me and my kiddos all go outside more often, and i can almost always count on her napping, reclined in her stroller when she is at all tired. i get her all cozy, and then push her on the bumpy sidewalk, and it works almost every time. then if/when i need ot come inside, i lock the screen door,open the screen door window, and park her right in front of the door, so she can still feel/see the light/ air. i also sometimes drape a light blanket over the peak on the canopy so she can;t see me and there is a little less stimulation. hope this works as well for you as it has for my little ones. i also begrudgingly had to halt my caffeine fix, and this week has gone much better for her with the sleep, never mind now i want to sleep always. haha. good luck. peace, A.