This level is not too difficult. There are some numbers of crumbling tiles, but they are mostly not connected to each other. If you step on one of them, not every tile will crumble. If you can successfully avoid the gaps and holes, you can surely finish this level easily.
But beware, there is a gap between the level and the next level. Don't drop your attention when you think you are about to beat this level. If you fail, you will have to play Level 7 again.