ask again: nursing question. thanks.

i notice my baby doesn't really keen to suck b4 she goes to bed. she used to suck both breasts, to fill her stomach for the long night. but i notice lately she just want one breast and even so, she just suck for very short time, as if she is just doing it for my favour (i beg her to suck).

she doesn't wake up in the middle of the night for milk. even she wakes up, crying (teething), she will sleep back without nursing.

is she slowly weaning herself?