Y'all chill
As has been mentioned, Dangerous Woman is still gaining on radio and on the charts. The label wants to maximize sales of Dangerous Woman before letting it die. It hasn't peaked yet so Republic isn't going to send other single out for adds yet before squeezing out every bit of life from the current single.
Y'all forget even Focus got spun heavily by radio at first before the negative reception forced them to back off, and Dangerous Woman made Top 10 on Pop radio and is still gaining. Ariana is a radio darling. They love her.
There's literally no way radio isn't going to spin Into You like crazy. It's exactly what Pop and Rhythmic radio want from her.
As for worrying about it's iTunes position? Chill the f out guys

The song hasn't even been sent for adds on the radio. Most of the GP is still unaware of it. It'll stabilize and climb once radio starts picking it up. Which I'm confident they will since it's so radio friendly and perfect for the summer.
As for the promo, the public has mostly heard Dangerous Woman. They probably did medleys for both of the performances so Ariana could showcase the diversity in the album and promote the album. Same reason why the debuted the music video and uploaded all of the Vevo presents performances. It promotes the album and gets people to buy/stream it. It's clear her team is gunning for the #1 this week.
So all in all, it's going to be fine. There's no reason to panic right now, so until we have a reason to, everyone just TAKE A BREATH
