Is malabsorbtion syndrome like Protein Losing Enteropathy? If so, I would highly recommend an immediate consultation with Susan Davis, who helped my Sissy and BleuBoyBarber with her Jill. Specific diet and supplements can be the ticket to a quick turnaround. Specifically, a probiotic, digestive enzymes, and liver support along with a quality diet. Chicken is generally not recommended because of the antibiotics and hormones most are pumped full of. And rice is not easily digestible, so can make matters worse.
I'm assuming your vet has run a full blood panel including a Spec Cpl, looking at the Protein level, cobalamine and folate? If not, this needs to be done as well. Steer clear of steroids, though tylan powder may also help the gut heal.
Pet Health Pet Nutritionist Holistic Pet
Praying for a recovery...