Dry skin? Need advice

Knorr

My baby has this all over his face and random patches on his arms and stomach, the doctor, who he's seen twice this month for this so far, said its eczema, gave us a list of lotions to use and prescribed him an oral steroid for a week to use and it cleared right up for that week but now it came back even worse and on more of his body. Lotion isn't even helping anymore. What should I do?