Not eating 1200 calories after gallbladder sugery

I am on my 5th day after my gallbladder was removed. I am finding that I can't eat as much at each meal. I have been averaging 700 calories a day. I have two questions:

How long until eating like this sabotages my weight loss.

For those who have had their gallbladder out: will I have to eat small meals from here on out or am I just too soon after surgery?

Many thanks!