Hello,
My i2c 24bit ADC sensor requires the following:
1- slv-adrs-->command_start_conversion
2- slv-adrs-->read_byte1(master ACK read)-->Read_byte2(master ACK read)- Read_byte3(master-ACK read)

How can this be done ?

The problem is that the ADC sends the first byte and gets know ACK from the 14580 so it stops sending.

After sending address+read command , The 14580 should send an ACK after each received byte.
The attached image shows how the sensor is acknowledging the receipt of the address and starts to send the first byte
and the DA14580 is not sending ACK at the end.