10 yr old male diagnosed with diabetes.

Hi, my 10yr old male has just been diagnosed with diabetes. For the past few weeks he’s been drinking a lot more water than normal & also wanting to wee al it more than normal. He’s also dribbles while in the house. Is this common in this breed of dog & asking for any advice of what we can do to help him. The vet says insulin which the insurance company will pay up to the renewal date then its the option of ourselves paying for this which I hear is not cheap. Any help much appreciated 

Many thanks

Pete.