Continue breastfeeding?

Kiera • Mommy×2. Student. Girlfriend

I don't make enough to exclusively breastfeed so we supplement with formula. My supply has just continued to drop and I've thought about just stopping. If I decide to stop I have to switch my birth control. But it seems like the only way to soothe my son sometimes is to let him latch even though I'm not sure if he is actually getting anything. I think he just likes to use me as a pacifier..