Getting used to using a hearing aid is like getting used to any new tool. It will take a little time, patience, and practice to learn how to use your hearing aid.
A number of strategies will help. The first is to wear your hearing aid most of the time during the day. Like any tool, the more you use it the sooner it will become natural and incorporated into your innate sense of hearing.
Imagine a musician whose instrument seems to be an extension of their body, something that they apparently use effortlessly. That didn’t just happen. They practiced with their instrument for countless hours, building up muscle memory and eventually a subconscious connection with the device. The more you use your hearing aid, the sooner that will happen.