If you have just bought it for a few days, you should decide whether to sell it right away. For example, stock funds may redeem the rate of 1.5% within 7 days to prevent short-term frequent entry and exit from affecting the operation of fund managers.
It is normal for the fund to fall these days, because it will be like this before the IPO, and it will be normal in a few days. If you have only bought it for two or three days, don't sell it right away.