It might just be short, but it will be all worth it! :)
Spend a few minutes on Sunday morning to make a to-do list for Monday. - "Do a mental dump and you won't be carrying anxiety around you."
You may now return to your previously scheduled weekend fun.
Read a good book. Reading for 6 minutes can help reduce stress levels by 68% as per a study done in 2009. It requires real concentration than watching a TV, and the distraction can help ease tension of muscles and heart.
Another option is listen to music which also proves to reduce stress by 61%.
Choose to have some home-alone time. You might ask your husband to take a daddy-kiddo bonding out, then take a walk, or an actual nap ;).