The bridge area, above and below the chocolate fountain, is a key place to focus on moves for this level: you can make bigger combos and hit squares in both of the top quadrants if you can make matches there. Try to open the mystery bags as soon as you can, and keep a mental note of which jelly squares you’ve cleared: if the chocolate is growing there, don’t worry too much about it.
The chocolate can block off candy production, but this can also give you opportunities for reshuffles when you run out of moves to bring two special candies together. A little bit of concentration will get you through this one.