Moon-ring, in your first photo that's a burmannii, not a spatulata. Heavy feeding keeps up with the flowering for them at least for a couple years otherwise they're built to bloom and pass within a season; annuals are more rigid in their bloom-till-they-die habits but not completely insurmountable. Feeding decreases the coloration however.
For all my plants, even those setting seed with regular flowering, there's very little impact from any one bloom cycle, and anything that isn't setting seeds (hybrids) I have continual blooming all the time with no setback as long as they get fed in some amount (which currently is mostly from catching very occasional fungus gnats); if a seed-setter just keeps going continually then eventually the amount of energy used in flowers and seeds overtakes what's being maintained by the leaves (but same would go for anything that just reproduces sexually in a continuous fashion), but the bloom itself on first round, negligible. Any time a plant looks to be having problems there's just about always been something else at play, ie. old soil or earthworm invasion, pest attack, or impending dormancy. Or, newly arrived/repotted and not established so it's stress-flowering.
