18months for me because it helped me with slimming and maintaining my weight lol (but do note I am a SAHM so it’s easier for me.) Anyways don’t be too hard on yourself, if you feel that pumping is taking a toll on your body mentally and physically, it’s totally okay to wean off anytime. 😊
I stopped BM at 7 months and he was on fM ever since. He’s now 20 months . growing well and healthy. Anyway I think it’s up to you. For me , I felt unless both mom and baby enjoy Breast feeding, there’s no harm stopping it after 6 months as nutrition wise there’s not much value continuing to do so.
It’s ok to wean at your comfort timing.