Not interested in eating

My 6 month old is just not interested in eating from the bottle or breast. He's so distracted and just doesn't seem hungry, especially in the morning.

We've gone down to 7oz bottles 4 times per day and he goes around 4 hours between feeds. Then he'll breastfed 1-2 times per night with maybe 2oz of formula after. And he's awake and happy for the day at 4:45am (goes to bed at 7:30pm).

He used to only wake once per night and sleep until at least 6am.

Is he teething? It seems like we should be out of leap 5 at this point.