Do you have any other socials. I’m a stutterer as well and I love getting to know other stutterers because ad I’m sure you know it can bring ally of negative emotions. And having someone there who talks like you helps a lot
Tea your speech is definitely improving since you have that thinking like a singer thing down. Whatever you're talking about just let it flow. If you have any bad days in speech try lightly massaging around your adam's apple (this is the back of your tongue). It would make sense to me the longer you actually do this the better the result.
Stuttering is basically when the front part of your tongue vibrates. In most cases I think as you grow older that vibration decreases as your tongue gets steadier.
Thats one of the thousands of possible reasons why someone has a stutter and the reason why its mostly regarded as incurable. For me I feel like there is a lot more pressure on my neck rather than on my tongue when I speak