Thanks for the information!
The creams you mentioned and tried like Aveeno (as long as it's the fragrance free one) and Glaxal Base and Eucerin are usually effective. The only downside is that they need to be applied often, like at every diaper change to help incorporate it into a routine.
In cases where this is insufficient, I usually suggest a more oily product like Aquaphor or even Vaseline.
That being said, if the oil you use seems to help, I suggest applying it much more often than twice a day
After bathing, avoid rubbing the skin dry. Instead, I suggest lightly patting to leave a thin layer of moisture on it, then applying the moisturizer quickly after getting out of the bath
Choose cotton clothing/pyjamas as they allow for better breathability. Also, if the air in your home is dry, I suggest considering a humidifier.
Moisturizing can be quite demanding, but you have to be persistent. If it doesn't seem to improve at all after 2 weeks, I would suggest trying an oilier product like those mentioned.
I hope I've been helpful, I'm still available if you have any other questions!
Tom Samaha, pharmacist