Did I lose counterweight?

Ok so since wednesday I have be walking and cutting out on unwanted items food. Wednesday I walked 30 minutes. Thursday I walk an hour (30 minutes when I woke up and 30 minutes in the evening) and on friday I walk an hour too (30 minutes when I got up and 30 minutes surrounded by the evening). So I stepped on the scale and until that time it said 263-264. Now it says 261 and 1 ounce. I dont know if that be water cargo or what. Its supposed to be very cold tommorow. Should I hike like 15 minutes instead of 30? Like tramp 15 minutes when I get up and 15 minutes surrounded by the evening?
I havent been intake no junk food and only just eating everyday. And drinking no soda I think your doing tremendously well but even when its cold, you should newly stink to the same times on every bearing because if you walk smaller amount you body may not be able to handly every time you renovation you walking time...
I no i'm a personnal fitness instructioner..
So keep up the worthy work.
keep it up you are doing accurate :)