This is a Growth-Spurt age.
Then another one will be 3 months later at 9 months, then 12 months, then 15 months and so forth every 3 months.
At growth-spurts, babies and kids, get hungrier, need to feed more and more often.
And yes, they wake more for this.
They need their intake to keep up WITH them.
For the 1st year of life, breastmilk or Formula is a baby's PRIMARY source of nutrition, NOT solids and NOT other liquids.
And always nurse/feed on-demand. Day and night, 24/7.
Solids for the 1st year, is NOT their main intake. It is only an introduction to 'eating.' Not their main meal.
Baby needs, to get intake to keep up with him.
And yes, he may be teething. too.
Many things going on at the same time.
This is common.
It is babyhood.
Just feed/nurse him.
My kids at that age, were getting solids once a day. I nursed on-demand throughout the day. They had GINORMOUS appetites and nursed. Day and night. And they woke during the night too.
Always nurse BEFORE solids and before naps and bedtime. If you give solids before nursing, your milk supply will diminish and baby will be to full to nurse and they will wean from breast. You do not want that to happen. Babies still get their primary nutrients from breastmilk or Formula. Solids, does NOT have all of the nutrients a baby needs.