3 1/2 weeks out and weight is yo-yoing

Hi everyone! I'm 3 1/2 weeks post op and have been on solid foods for the past week. I've been following the 3 meals a day 60+g of protein and exercising throughout the week. My weight has been fluctuating up and down by 5lbs every other day and can't seem to break this cycle. I go for my first fill on May 23rd and hoping this will help a little. I've read a lot of posts about not worrying about weight loss right now but it's so frustrating when you do things the right way and you still get punished for it. Sorry for venting but was just wondering if anyone else is/has gone through this.