Aha! That’s the kind of stuff I haven’t figured out...when to stop with the heat lamp or make it lower temp. How do you know when it’s time?
First, heat lamp should be above brooder on right or left side.
The first week of life, temperature under heat light at bottom of brooder should be about 95F.
Observe chicks, if they are huddled under the light and chirping they are cold. If they are away from light most of the time, it's probably to hot.
If the brooder is in a place where the temperature changes night and day like in a coop or unheated, cooled porch, then you'll need to check temperatures several times daily.
Continue to lower temperature under the light 5 to 10F degrees weekly, but observe the chicks behavior and raise or lower temps as needed.
Usually when chicks 5 weeks old, heat is only needed if temps drop below 50F degrees. But, some breeds, and bantams may need heat longer depending on temperatures.
Observations are the best way to know for sure.
In this picture they are comfortable. They aren't directly under the light, nor far away.
They venture to the feeder and waterer as needed. GC