Slide a small bucket under the supply lines to collect any water that may leak when you disconnect them.
Shut off the hot and cold water supply lines. Bleed out any water to relieve any pressure that’s still in the supply lines.
Using the adjustible wrench, disconnect the hot and cold water supply lines from the bottom of the faucet. Use a towel to collect any excess drips from the lines.
Use a basin wrench, or standard wrench if space permits, to unscrew the bolts holding the faucet in place. Depending on the connection, you may be able to unscrew these with your fingers.