Take him for a walk
. Walking naturally stimulates pups to go #2. Works like a charm with our Snickers. If it's really late, just stay near your house.
Good luck
Snick & Viv
ps...Pumpkin is great for constipation. Btw, this will happen alot, dogs are always on/off schedule. If you have a schedule for walking Baxter, he will start pooping during those walks.