Started my journey-anyone here nearing the big 5-0?

im a father of 3 trying to lose weight and get fit to keep up with my kids aged 9,10,15. I'm hoping to lose 85 pounds in all. Have lost 13, since September but am now serious about my caloric intake. I'm working out 3x a week w a trainer because I need motivation and accountability to workout. I'd like to be in the low 200s by year end.