Have you done the Tyson dodge testing method to determine your latency? Are you able to dodge his uppercuts on reaction? During Rounds 2 and 3, he’ll do a pattern changeup and then throw an uppercut. That first uppercut after the changeup comes out 1 frame faster than his normal Round 1 uppercuts which should all be perfectly dodgeable on reaction anyway.
Round 2 after the changeup is 2 uppercuts. Round 3 after the changeup is 1 uppercut, then a waiting period followed by the 2 Jab --> Uppercut combo. (an easy opportunity to block both jabs and get two stars before dodging the uppercut)
You can get like 7 stars at the beginning of Round 2 because he opens with those jabs (obviously your Stars cap at 3).