10 kgs at 19 months? Ok lang ba un

I am a bit worried my daughter doesnt eat 3 times a day as soon as she started teething molars. Its been three days now she is only eating during afternoon and some days dinner. I give her smoothie if she doesnt like to eat. I dont know if I need to be worried or not. If she doesnt like the main meal i give her options like fruits and snacks though. Is her weight low? Her birthweight is 2.8kgs.