Sounds a lot like the flow dynamics we have here in spring. Is your main honey crop mesquite? When does that start or is there another floral source that produces most of your honey?
Here, we get that early spring flow that's intense but short lived. The pollen comes from many different plant species so it's very nutritious (multifloral pollen is the best from a nutritional perspective) and it really gets the brood rearing ramped up and the bees get really strong really fast. Then, we have a dearth where little nectar is available and fewer species of pollen are available. Our spring flow generally starts in April and runs to mid-May, sometimes June. Then the dearth hits until the clover kicks in hard in late June. I feed pretty hard (sub and syrup) from early spring through the dearth to keep the bees building until the main flow.
I'm sure you'll get your bees back on track and do well. Keep us posted--always nice to hear from other parts of the country!