Train consistently, don’t think you can eat the contents of the fridge after a 1 hour ride and look to cut out something from your regular eating. You will certainly lose weight.
I’m 5”11 and weighed 160lb on Boxing Day 2017, I rode consistency through Jan to April and dropped a few pounds. From 1st May I stopped eating chocolate and treats AT WORK, come Hill climb season I was solidly at 147lb and got down to 145lb on 28th October 2018 (my number 1 goal race, National Hill Climb). I’m now back to 150lb over Christmas, that’ll go back to 148lb in January once the chocolates have gone! 
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My point is, ensure you fuel your workouts correctly, eat a solid meal after your workouts but make a conscious effort to cut or limit something in between. I’m sure you’ll be pleased with the outcome.