My 10 month old is weaning herself, which is strange because right as I thought I will start to wean so it's easier at a year to say okay all done.

Well I have been (trying) to supplement her with formula and sometimes she actually takes it, especially when I babysit because the little boy takes a bottle.
So I am writing becuase I am worried about her nutrition.
She BF on one side in the morning.
Sometimes takes formula or juice around lunch, sometimes earlier, depends on when she wakes up. When I babysit which is 4 days a week she takes around 8 ounces by the end of the day. 4 ounces in the morning and 4 in the afternoon.
But sometimes she only Bf in the morning on one side.
On one side around 230. and on two sides before bed.
Is that enough nutrition. She also eats the yobaby yogurt.
OUr ped also said we can start introducing cows milk at 11 months.
She doesn't take vitamins becuase she is a healthy baby.