Yup, you are the Pretty Chicken Owner I know!
It is still way too early to begin Bite Pressure Training without a glove!
But it is not too early to begin training with the glove in place!
Start with using 'Its OK!' or the like to be used with anything that in your mind may startle him! As you hear it, you say /use that clue! Its you ID'ing what may startled him and letting him know that you're watching out for him!
At present, he will likely continue to bite and when that pre-bite movement starts or if you catch it at the bite - you use your clue word (slightly louder /stronger, but not to a point that you also startle) for letting your Parrot know that a hard bite is not permitted. See the Thread in the Training Forum for a couple of examples.
NOW, your Blind Parrot will likely use some level of a bite (goal is a grasp) to communicate his feeling fear, but it should be a gentle grasp not a bite! Based on that fact, I would recommend that you use a clue like gentle.
As his pressure reduces bases on a combination of 'hey, my Human(s) is watching out for me and a greater comfort with you and your family. Once he reaches a grasping level (a hanging on, just in case I may fall type) level. Its then time to begin the bare hand training.
NOTE: Make sure you start slowly introducing your bare hand. Here, the clue word you are use for something may startle you could be used to introduce your hand, followed with 'Step-Up.' Once he has a comfort with your hand, you can slowly eliminate that clue word.
FYI: Get everyone in your Family and also any Visits to use the Clue Word when they drop or bump something will help everyone! That way, your Parrot gets to know that all his Humans are looking out for him!
Hope its helps!
FYI: Use the Startle Clue Word 'Anytime' you hear something that may startle your Parrot - Anytime!