How many words do you recite in seven minutes?
Just speak at a normal speed, no more than 100 (CCTV announcers can broadcast 180 words in one minute). In fact, since it is a poem, there must be its emotions in it. Even in narrative, you should let the listener feel the vividness of the story through the change of tone, practice more, and feel the emotions and scenes inside first. The atmosphere is about 800.900 words, if you recite it faster.