Yes I face the same problem as you before and so I stop my breastfeeding at 14months my girl was so fussy that she did not accept solid food and formula when when she was 12months and was only fully bm .
On her 13months thanks god finally she accept to take porridge but still not formula but I tried every night keep trying and trying still the same .
when she is 14 month I decided to stop so I did not let her latch n let her feel hungry for about 1 hrs plus later she start to feel hungry and slowly feed her formula with pigeon wide bottle
she start to accept it but from that day onward I did not latch or give her bm anymore don't want her to feel confuse .
if you wan her to take formula you got to stop give her bm already .
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