This is ok, but it depends on your training plan. If you have a coach, making a plan will get twice the result with half the effort. I suggest you divide it into morning and noon.

(early) morning

The first ten minutes are slow, and the fifth minute is fast. Finally, 30 minutes at a constant speed.

evening

15 minutes even, 5 minutes fast, 10 minutes even.

There is nothing wrong with the fat. Fitness is something that will be effective as long as you persist. Pay attention to your cycling.