Strained Trapezius And Being A Mom

I just don't know how I'm supposed to refrain from using my right arm/shoulder when I have a 10mo. How can I keep immobile to allow the muscles to heal when I have to run after my son, pick him up to comfort, nurse, bathe, feed, put to bed and play with!?! I try to ice it and do some physio, but there just isn't time when he's not hounding after my attention. I can't bake or cool or nurse without extreme pain. Argh. You just can't be a mom when you're injured. I know there are deffinately people out there with it worse than me. But I'm just ranting my frustration about my current situation. So much pain, so exhausting, so sad 😣