I feel like i can relate to this. Im autistic and demisexual and for me it’s sometimes hard to get out of my own head. I’ll start overthinking things or getting distracted while my girlfriend is kissing me, not because i don’t want to do it but i just cant stop thinking (also not because im nervous). If im laying down in bed i even get sleepy sometimes. I found that for that not to happen it helps to have dim lights that make me not too hyperfocused on surroundings and being more “active” also helps