"Daddy, I ... I can't get...my shirt off."

AJ's eyes were welling up. He was taking short deep breaths through his mouth. His arms were partially raised above his head. He was overwhelmed. On the verge of crying. I reassured him, "It will be OK, AJ. I can help you. Show me what the problem is." He grabbed the end of his sleeve and pulled his arm in. He strained against the fabric, but his arm was stuck. He couldn't get it all the way out. This shirt has 3/4 length sleeves, unlike any of his other shirts. "See... see Dad ... I can't get ... my arm ... stuck." he choaked out trying not to cry and meltdown. He strained against the fabric and began shaking back and forth. "OK AJ you are right your arm is stuck. How can we try a different way. Maybe you can pull your shirt up first and then get your arm out. He lifted his arms up, pulled his shirt over his belly and struggled to free his right arm. All the tension released from his face and body as his arm came free. He gave me a warm gap-toothed smile. Said "OH" and ran happily off to get in his Epsom salt bath. To teach him to dress and undress we taught him first one arm, then your head then your other arm. When that didn't work he saw no other alternative and felt trapped. I have told him "can't is a four letter word we don't use in our house. We ask how can I... When you think can't you need to change to How can I and try something else." Hopefully with enough practice he will learn to come up with new ideas on his own.