Must the husband spend the same amount of time with the first wife to compensate for his absence with the second wife, in order to achieve justice?

Scholars have differed regarding the making up of days for a traveling wife, and the preponderant opinion is that she does not have the right to have them made up. Based on this, your first wife has the right to demand that you make up the days you spent with your second wife. As for a husband visiting a wife other than the one whose turn it is, the general rule is that it is not permissible except out of need during the day or necessity at night.