Teething 8 Month Old, Won't Eat Solids

So I started my 8 month old on Solids when he was 4 1/2 months & he ate whatever I gave him. He was a good eater for breakfast lunch and dinner plus hes exclusively breastfed. He has 2 bottom teeth & hes getting his 2 top teeth. He bearly eats solids right now he just tells me NO "Shakes His Head No" I know his mouth hurts but he only wants to breastfeed. Thanks for reading any advice is useful.