Regular practice tips
June - Just learn to sketch the three basic strokes with a simple HB pencil - Straight lines, circles and freehand curves along with basic shading. Books like 'Drawing Made Easy' by Subodh Narvekar will be particularly useful
July - Learn to draw simple objects like cup, glasses, tables, flower pot, etc. from your imagination as seen from different angles
August - Learn to 'modify'; these basic products to something you have imagined. As an example, you have drawn a vacuum cleaner, now imagine and sketch a vacuum cleaner of a flower shape.
September - Try to create even more radical ideas and sketch in detail them using products you sketched in last month. For example, you have already sketched a flower shaped vacuum cleaner, now try to think how a will work? Will it have a motor inside or should it be driven by something radical like steam generated vacuum?
October - Till now you have focused only on improving your skills, but not actual design. October onwards, start finding real life problems, such as how will you design a crate that will carry more eggs safely on a bicycle or how will you create an info-graphics that will show literacy rates in different states.
November - CEED is just a month away. This month solve the old CEED papers with realistic timing. It will give you feel of actual exam. If you feel you lack some skills like the ellipses you sketch need a bit of more practice, this is right time to do it. Solve the papers again of you have done it once. Try to think different ideas than you have done the previous time
With these tips, we are pretty sure you will be able to score well in CEED. The same skill set can be used for NID entrance as well
All the best to all aspirants. :)