No, I wouldn't and didn't For me, optimising DS's health was more important than compromising it to create anothery. That and for various reasons I wanted as large an age gap as AF would allow, so I let BFing run its course of effectiveness.
There is no need to wean completely, though - dropping one feed here and there should kick start ovulation
FWIW, I got AF back after 26 or so months, but didn't actually ovulate till about 30 months and fell pg at 31 months...all whilst breastfeeding DS whenever he wanted to BF, without dropping anything on purpose. He fed a lot, too before I fell pg - 4 times a day was normal, at least.
Good luck