I would just use just the TB when feeding and just the BB when watering for a few rounds. If you have some worm castings, a nice top dressing, tablespoon or 2 per gal of medium along with the dolomite at a rate of 1/2 tablespoon per gal of medium. Scratch into the top 1inch or so of soil. (yes you will disturb a few roots. No worries breaking through any smaller than a pencil lead, maybe a bit smaller than that) Then follow with a good watering of Big Bloom, couple tablespoons per gal of water. Dont worry about phing the solution, just water very well until you have good runoff and monitor the new growth.