Use a temporary blue chain to jump through the bomb blocks and land on the center of the ledge above. Break the last block by jumping directly into it, as there is not enough height available to get a bounce. With this method, there is a 2-frame window for when to morph; jumping from the platform below is also possible but requires a frame-perfect morph. If Spring Ball is available, it can be used to increase the window by one frame in either case.