Um, no. The suit contained a download of all the Sphere Data that Control wanted to get its 'hands' on. The plan was always to have the suit snap back to the future (to break that cycle where control always knew the time and place it would return to); and then Burnham would send it hurtling forward through the timestream for eternity so that Control would never be able to get it; and thus biological intelligent life in the Universe is saved; but Burnham is trapped where she lands; but hopefully she would be reunited with her mother.
That's why when the suit AI stated, "The wormhole is closing..." Burnham jumped up quickly to program and send the suit off into it before it closed. Had it closed, that part of the plan would have been screwed.
The Klingons still on Borath, guarding all the time crystals that are needed to power the technology?