It can be hard to drop the ingredients to the main board as the regular icing can only be removed by horizontal striped candies, or (more effective) by a combination with a wrapped candy, especially the topmost icing (but that is not required).
The coconut wheel is useless until the ingredients are in the main board.
With four colours, it should be easy to create special candies.
Try to use the colour bombs at the end. Use the wrapped and striped combination to release the ingredients on the left onto the main board.
Once the ingredients are on the main board, use colour bombs to reduce the colours on the board and get the coconut wheel onto the main board. Once the coconut wheel is on the main board, use it horizontally to flush out the ingredients.
Alternatively, instead of using given colour bombs at first, make horizontal striped candies or striped + wrapped combinations to release ingredients onto the main board, then use those colour bombs to clear the bottom area.