I’ve followed your advice and do 4 quick bursts of 60 seconds on the cross trainer for the 52 minute session but now need to eat fewer desserts and carbs which is difficult. I also eat bread every day as well.Sounds like you're well on your way. You can also try to eat more satiating food, for example grapefruit or watermelon are voluminous but have very few calories. Eggs and avocados are amazing for you and are also relatively filling. Whereas oil and nuts are tremendously calorically dense and don't even feel that filling. Most protein sources feel pretty satiating.
If you're motivated to do more, my suggestion would be to add more strength training in order to drop fat, and not more cardio. This is speaking as someone who is in the upper echelon of aerobic fitness -- lots of cardio just isn't usually that great for dropping bodyfat. HIIT is excellent, but should be kept as a small percentage of your volume or you will end up with negative fitness effects. If you run, you can work it in very easily. For example if you run for 50 minutes, include 4-8 bursts of 20-30 seconds really fast in the last 20 minutes of the workout. "Strides" are really good for gaining speed.