You are a diabetic and should not be using iic or cic hearing
aids. Starkey and Oticon both have mini-RIC type of hearing aids which also have Bluetooth pairing with your Smartphone. A good hairstylist can better conceal this device than any canal occluding aid.
And the sound clarity is a huge difference with no occlusal effect and best of all batteries which last upto 10 days. Newer rechargeable batteries also available.