Birds that are in a molt burn more calories because they need to the replace the thousands of feathers that they shed over period of time.
A brooding hen in a molt is a perfect storm for a bird that is malnourished.
Ask any veterinarian and they will tell you the single biggest cause of death in pet birds is malnutrition.
Personally I also change my birds water (we have seven; six budgies and a Senegal parrot) at least twice a day in the morning and the evening.
I freshen up the two birdcages food dishes when I freshen the water in the evening.
Everything gets totally replaced every morning, food and water.
Millet is a treat.
Our six budgies split a millet spray every couple of days.
I cut a millet into six pieces so everybody has an equal opportunity to enjoy this tasty morsel.
Keep in mind that millet to birds is the equivalent of McDonald’s French fries to humans.
Really tasty but really fattening and must be kept in perspective.
Wrapping things up, we like to introduce cucumber slices to the budgies cage on a regular basis.
Peaches our Senegal will have nothing to do with the fresh vegetable but will eat other veggies with us at the kitchen table.
We also offer the budgies baths almost daily and place lettuce within the small bathtubs that they enjoy chewing on as well as bathing on it.
I hope some of this helps.
Best of luck.
Also published on Medium.