Need help

Hello mammas...

My little one is 15.5 months old. Until today I was serving my LO breakfast lunch dinner and two snacks between meals. She was also taking bottle bedtime at night and early morning nearly 3 oz each time. But for the past 2 weeks i am observing that if she eats snacks then she doesn’t show any interest to her lunch and dinner at all rarely takes 2-3 bites. Generally she does her breakfast at 8:30-9 am , lunch at 12:30 pm and then dinner at 7:30. Is it okay to give only 3 meals no snacks .. I’m really confused.