Stop breastfeeding?

Anyone stopped breastfeeding at 4-5m postpartum? I've always been a just-enough supply mum and my supply dropped tremendously recently. I'm 4.5m post partum and find it stressful and tiring to continue. But i also feel guilty for wanting to stop. Not sure if I should take this "opportunity" to slowly stop breastfeeding? Just want to hear from fellow mums on their dilemma and what is the eventual choice taken.