Pearl was like this as a pup - at 9 months old I sat on the living room floor sobbing while a white and black set of flying teeth jumped over me.....
I had no problems like this with Coral. Yes she was a bit of a cockerdile at times but learnt bite inhibition very quickly and didn't rip any clothes.....
The main difference between the two was the way in which I handled them. I expected Pearl to be my companion and follow me round, especially at weekends. She was a high energy pup and needed a lot of attention/"jobs" to keep her occupied - she also wouldn't give in to sleep and where I naively thought she would put her self to sleep for a nap in the day - she didn't!
The moment I realised (and I think it was from a comment on here

) that she was over tired my life became very much easier!
If you don't already, I would urge you to set a regular schedule of sleep for Blue - morning, afternoon and evening. Pups need around 18-20 hours sleep a day. I'm still amazed how much sleep they need!
Coral happily puts herself to sleep by getting into a basket or her crate throughout the day, she also asks to go to bed at 9pm and sleeps through to around 7am.
I would also suggest finding a - positive training only - not an old fashioned trainer

gun dog trainer in your area. Spaniels have very different needs to most dogs that attend puppy classes etc and while your trainer works with cockers they will have a high prey drive and be a little obsessed by balls/ food etc which makes them easy to train but not suitable to be pets......Blue as an extension of your family will probably respond better to being allowed to hunt and quarter in a controlled manner which a gun dog trainer will help with. It doesn't mean you have to "do" anything to do with country sports.....