Track calories accurately, drink water. test your blood sugar. IMO the only thing that really uses calories there are your two rides of 50 miles each, even those two for me wouldn't add up to more than maybe 2400 total calories burned only if they were hilly. If you want exercise to burn calories to create a deficit, you need to not eat like you are fueling as such. 3500 calories deficit might mean a pound of fat lost. 3500 caloric deficit from exercise is quite a commitment. So if you eat extra you are eating away at the deficit. Weight loss mostly comes from the kitchen. So track calories, drink enough, eat clean, high fiber, not processed food like lunchmeat.