Many folks new at brooding baby chicks agonize over the brooder temperatures, having been recently made aware of the temperature guidelines.
It's not written in stone that you must provide 95F in the first week and decrease it by five degrees each week thereafter. In fact, nowhere in the guidelines does it point out that the recommended temps are for a heat zone directly beneath the heat source only! The remainder of the brooder should be kept much cooler!
I noticed that many brand new baby chicks prefer, not the recommended 95F during their first week, but are much more comfortable at 85F. If your chicks are trying to get as far away from the heat source as they can, it's a signal to you that the heat lamp is too hot. Either raise the lamp or switch the bulb to a lower wattage.
You want to see baby chicks moving in and out of the heat zone, from warm to cool and back again with ease. Chicks hogging the spot directly beneath the heat source means they're cold and need it warmer. You need to lower the heat lamp in that case or go to a higher wattage.
Remember, it can be any temperature at all, even close to freezing, in the rest of the brooder space. The important thing is that there is a heat source at which the chicks can warm themselves. They will take care of regulating how much heat they need by moving in and out of that heat zone.