How to lose weight for a wedding

My wedding is in September and I would like to lose around 15 pounds by then. I currently weigh 147 pounds, 5’5, and am a 23 year old female.

My current followings (as of January 1st lol) are:

-Limit alcohol drinking (3 or less mixed drinks/week)

-Have water with every meal, no other drinks

-Only 1 sweet treat a week

-No candy

-Only eating out 3 times per week (this number may still seem high, but in the past I have ate out at least once a day usually. For lunch at work I would usually grab something, and then on the weekends with friends/family.)

-Be more mindful with choices (instead of french fries have vegetables, etc.)

Any weight loss tips/tricks I can follow that aren’t super restricting are welcome!

For exercise, I try and do daily ab workouts and some dancing. I have a treadmill I use a couple times a week and fast walk on.