YM is going to become it's own animal as earnings are starting now, coming out first on the banks. Expect more divergence from the other two for a week or two. When tech catches up in earning reports after that? I would suspect some NQ wavering, as Q2 should show a temporary slow-down in rate of growth with re-opening in play.
If you truly believe this is a juicy little dip, you should place a buy market order in now at what, 4303? Don't wait for the 4289 to come, because you will be missing your entry into this "juicy little dip". Here's the 1 month look at it... You really going to miss the dip now for 14 points away from your entry?