Slow down that popping yeahh

How would I start if I want to pop each candy for some delay. Can someone give me the idea?

Since it involves loops and I need to slow it down I think delaying it must be a pain in the ass.

Some idea from you guys would be nice cause this is my first time I intend to complete a game like this and I thought it would be easy too. Lol ;D

Thanks in advance…