Postpartum dryness persisting

I had my daughter 3 years ago. I am a single mom and don't engage in intercourse regularly but when I do, the dryness is still there... I've even noticed it with masturbating/using a rubber penis, anything that's penetrative hurts.

I am not on birth control (use condoms, always have, have never been on any form of hormonal or implant birth control). Weaned breastfeeding about 18 months ago.

Anyone experience lasting dryness? Favorite lube?