Struggling to Keep in Touch with Friends

I'm really lucky I found friends that put up with me but I just say I died, it's my form of just entering another realm of my mind, I wont say a word for weeks and then poof, I return like nothing happend. Also make little notes, but somewhere important, somewhere you look often, though not something you see everyday, just something where a bright pink sticky note would stand out, it's works for me since if I see anything bright I walk over to it, or set phone reminders with weird notification sounds, that's always fun

Yes 100%. I always just say its me having a low social battery.

All the time but what I do is when I start to get close to people I let them know that I have ADHD so they know I am not just ignoring them and they will also know that after a few day try to message me again and that's how I have maintained close friendships