I've inherited my mums 14 year old labrador whilst she is in hospital long term. She fed him on Wellbeloved turkey and rice kibble. The last few weeks he has an upset stomach. I took him to the vets last week who prescribed some antibiotics and bits and bobs and s light diet if chiicken/rice/scrambled egg etc for a couple of days. . Forwards to a week later, tummy sorted but turning his nose up at original food. Still likes bonios etc . Should i try a different brand? If so, which one...i am having to count the pennies a bit? Or if i continue with 'human' food, what do i need to give him to ensure he has a balanced diet? Thanks in advance.