8 Month old Refusing Solids

Rebecca

My LO started solids at 5 months. He was doing great and loved all the veggies or meat we'd give him. (He hates fruits) Now about a month ago he just stopped eating them. We still offer him food every day, usually ones that he loved, but generally nothing. He has randomly eaten a couple times but that's it. He drinks nearly 40 ounces a day now and I can barely keep up with pumping. Husband and I don't know what to do. Obviously we'll keep giving him breast milk but does anyone have any advice on how to help get him back to eating solids? We have his 9 month appointment coming up soon so we will talk to our doctor but until any other possible solutions are welcome. TIA!

*Edit: I forgot to mention he is just now getting his first tooth. So I know his teething could be part of the problem*