Welcome to DC Jenu swaraj!
Have to give us a bit more information to try and help you.
Let's start off with...
Is this a milk pudding?
They are often quite soft at the finish of cooking and then thicken up as they cool.
By dry, do you mean a thick skin has formed on top?
If so this will happen if you don't cover to prevent this skin. Use some plastic wrap or wax paper to cover.
Meddle not in the affairs of dragons for you are crunchy and taste good with ketchup.