My LB recently had tonsillitis and was the same barely eating. I just got little bits in where he would. Like yoghurts or smoothies. Anything soft. Lasted a few days then he slowly picked up again.
iv tried fruit shoots orange juice apple juice milk he wont eat anything at all i tried soup yoghurt really soft rice banana watermelon he aint having nothing his eating has declined over the last 3 weeks he had something viral then for the last two weeks tonsillitis hes on round 3 of antibiotics i took him docs again this morning and again antibiotics were changed
Sounds like you're having a tough time. I would phone 111, it sounds like you need some professional advice on his eating. They might just be able to put you InTouch with someone that can help. Really hope things improve for you soon x
Try squash / fruit shoots / juices etc - if you are very concerned go to A&E