I would agree that this is way too early. On the other hand crowds at rallies are relatively meaningless as far predicting actual election results are concerned. During the 2018 midterms Trump drew huge crowds at two MAGA rallies in Pennsylvania. The Republican candidates that he was supporting for senator and governor both lost by double-digit margins. Same in WI where both Republican candidates lost despite Trump's well-attended MAGA rally. Going way back, in 1972, George McGovern drew an estimated 100,000 at a rally in NYC less than a week before the election. He went on to lose to Nixon by one of the largest margins in history, including losing NY State.