I honestly don’t see these as being overly formal, but I worked in finance and real estate legal compliance for many years and that may have warped my perception. I think it all depends on your environment and how well the person reading this knows you (aka will they be able to recognize your intended tone?)
I think you can do all of the things you said without being overly formal about everything! For reference I have ADHD too. ☺️
I honestly don’t see these as being overly formal, but I worked in finance and real estate legal compliance for many years and that may have warped my perception. I think it all depends on your environment and how well the person reading this knows you (aka will they be able to recognize your intended tone?)
I don’t read formality in these either, fwiw. in fact they’re generally pretty casual.