Charge/Discharge a Battery Pack Wired as a Segregated Paralleled Series
You can't balance the cells with this configuration (6SPx). The Problem if one cell is charged more than the others you'll not be able to figure it out. You have 12S10P configuration, for example if you use a balancing circuit with a configuration of 6S4P you'll balance each individual cell of four branches of your battery with different voltage which can leads to over voltage or under voltage of the cell and damage your battery pack. You can use your  balancing circuit with 6S to only balance 6 cells in serial in your case. So you need about 20 balancing circuits to balance your individual cells safely.