The ingredients you need to drop down are blocked in by the 2 hit blocks. So you need to open up the space under the dispensers before the ingredients get on the board. Also note that you will get bombs out of here too, so you have to keep your eye on what comes out. Try to make a few vertical striped candies to shoot down through all 6 of the blocks in a column at once to make this easier. Once you get room in the middle, you should be able to make some matches and open it up more.
Thanks to Matthew Dean
Patricia Frederick’s Tips for Candy Crush Level 264
Avoid breaking the blocks directly under both bomb dispensers. Work one side only. Vertical candy matches in the exact column as the bomb dispenser will make short work of moving the ingredients out.