This might help, stop thinking about them as Grow , Bloom and Top max They are Part A, Part B and Part C. Balanced fertilizer needs all three parts A,B,C.
There is a range for each element in which it can still be in balance with other nutrients. It is when you get out of these ranges you get lock-outs.
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When a plant is younger it needs more nitrogen as it changes to flower the P-K needs go up. so just for illustration lets say you are feeding
N 250- P- 30- K - 100 for veg that fits in the range so is in balance so lets say in flower you are running N 100 - P 50- K 300 That is in balance but look how different those are!
Anytime the balance in your pot gets out of these ranges on even one of the elements something bad will happen to the plant.