7 month old suddenly doesn’t want to eat solids

My LO just turned 7 months. We introduced solids around 4.5 months with purées and mashed foods, slowly introducing things with more texture. He would love his breakfasts, especially yogurt with nut butter and fruits, and pancakes. But yesterday and today he’s been refusing to open his mouth for any of it. I’m not sure if I have adjust the timing of when I offer solids? Or if he’s teething? But I’m concerned bc he’s always been on the lower end of the percentiles so him suddenly refusing solids worries me.

Is this normal?