Hi C.,
I know how you feel. My youngest son was around 4 months when he first developed eczema. He is now 20 months and will have an occassional breakout. When he was around 6 months old, I took him to a dermatologist. He was a HUGE help. He confirmed everything that the pediatrician had been telling us. My son's breakouts were so bad that we were given several prescriptions. He was given a hydrocortisone cream for his face particularly for his cheek, to be used on especially bad days. He was also given a stronger cream to be used on his body. His breakouts are on the tops of his feet and toes, crease of his elbows and wrists, his cheek and patches on his back.
The dermatologist also said that he could have an Aveeno oatmeal bath at that young age, and to make sure he soaked for at least 15 minutes, but no longer than 20. He also recommended to blot him dry not rub, as that could aggravate the eczema. Another hint that he gave us was to wash him with a "clean" non irritating, fragrance free soap. We still use the Cetaphil bar soap and wipe him gently with a washcloth. Also used the plain Johnsons and Johnsons baby shampoo, so the residue wouldn't stay on his skin.
I never used the Vaseline, we were told to use Hydrophor. The Dermatologist said that it takes 3 minutes for the moisture to start evaporating from the skin after the bath saok. He also recommended only bathing him every few days, as bathing to frequently could also irritate the eczema and make it worse. Also expect more breakouts in the winter.
Recently, Curel developed a lotion that is wonderful!! It's called Itch Defense and is approved by the National Eczema Association, also says can be used on babies. I bought it in a 25oz pump bottle at Walmart, for around $9.00. I saw the ad in a Good Housekeeping magazine and decided to try it. I put in on my son every night before bed. It isn't greasy and absorbs right into his skin. I can see during the day when he starts to get a breakout on his face and by the next morning, you can't even tell there was a breakout starting.
I know this was a long response. Good Luck!