Can someone with ADHD share how they remembered vitamin D drops?

If you're about to lecture me on why it's important, save both of our time. I routinely forget to take medicine for myself when I am sick. I have tooth pain right now and I've been forgetting to make myself a dental appointment for months. I forget stuff. It's not a matter of not caring enough or not thinking it matters.

The vitamin D drops are so uniquely hard to remember to me. I'm breastfeeding. I keep the drops next to my bedside table so I can give them to her at the same time every day, before bed. I always look at them, realize I forgot, vow to do it the next time she wakes up, and forget until I look at them again.

What do you do? How can I get in a routine where this happens?

Edit: thank you to everyone who said alarms! I find that the way ADHD manifests for me is that an alarm reminding me to do something causes me to think "right, that's important" and finish what I was already doing, and never do what the alarm was about. I don't think an alarm on my phone is the path for me.