He is also much more settled now and ate another two spoonfuls of ID. The vet said to give small amounts first and gradually increase it to half a can, twice a day (for his 3.15kg weight).
The well-formed stool which is a cause for celebration!
Willy thanks everyone for the kind wishes and prayers for his recovery.
P.S. I did not rule out parvovirus, actually, but I don't think it is. Anyway, I disposed of all his newspapers in a sealed plastic bag, straight into the dustbin compartment. Everything is washed thoroughly too and disinfected, including myself! 1 part bleach to 30 parts water.