have this thing that is supost to estimate you bf%
What thing is it?
According to your posts, you gained a half a pound in a day.
Since you cut down your protien to a level more appropriate for you, you will hydrate some...the high protein would have dehydrated you..also the carbs...will make you retain a bit more water in the muscle. Muscle is about 75% water+- when healthy and not dehydrated.
So some of your initial weight will likely include water. After a few days any consistent gains will be muscle or fat. If the weight you gain every 3 days is over a pound consistently, that is an indicator to start to gradually lower the calories. There are two ways to do this and when/if you need that I'll tell you about it!
Your goal is completely reasonable! You are right on target!