What about the credited trading inventory with the cost price, should I avoid it/leave it out or?

The original entry for the drawings was:

• Debit Cost of Sales (with the correct cost price)
• Credit Trading Inventory (with the correct cost price)

The correct entry for drawings of inventory should have been:

• Debit Drawings (with the correct cost price)
• Credit Trading Inventory (with the correct cost price)

Comparing the recorded entry with the correct entry, you can see that the Trading Inventory account was correctly credited with the cost price. Therefore, no adjustment is needed for the Trading Inventory account itself in relation to this specific error. The error lies solely in the debit side, where Cost of Sales was debited instead of Drawings.

So, for the purpose of correcting this specific error, you should leave out any adjustment to the Trading Inventory account because it was already handled correctly.