Got the Slows

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I'm am a a 55 year old female, in great shape. Just started AGAIN, doing Step class at least 3-4 times per week, doing my Spin bike, and have started strength training again. During the warmer months I road bike at least 4 times per week!!
I am 30 pounds over weight, have been eating poorly over the past few months but now am back at staying on track. A couple years ago I lost 37 pounds, now my weight will not budge!! Trying not to get frustrated, looking forward to going to Bermuda in April with my husband to celebrate our 30th wedding anniversary.
My husband is just as active as I am and always a positve force for me, he has no weight to lose and looks great as fatty (me) stands next to him.
How do I jump start my metabolism, to lose this weight by April!! Any thoughts would be appreciated!!!!
Thanks,
BikerSueB