This article may be helpful
https://kellymom.com/ages/older-infant/delay-solids/

Eyeing off and trying to grab at your food

Mouthing when watching people eat, they are watching food go from your hand to your mouth, they have a tongue thrust when you put a spoon to their mouth. etc

How long are they lasting between feeds? If it’s not long, I would try introducing a little solids. My kids slept a lot better after feeding them solids