A patient adult can let a child solve the part they are ready to solve.

Adults step in for speed. It is quicker to tie the lace, finish the sentence or fix the tower, and the child loses the exact piece they were ready to manage. Competence grows at that edge, in the slightly difficult part that is still within reach. Taking it away is kind in the moment and expensive over years.

Watch for the point where you are about to take over and pause for a count of five. Ask which part they want to do themselves. Accept the slower, wobblier result, because the result was never the thing being made.