Congrats on the 40 lbs.
Just wanted to start off with I am a big guy over 410lbs before my surgery on 02/03/20.
I am only 1 month out from my surgery, but 1000 calories a day seems like alot.
It could be because I am only a month out , but I struggle to get in 300 - 500 /day.
I would call your nutritionist and validate how much you are suppose to be taking in at this point.
Good luck with everything.