Scales will move within 3months, visibly in 6. Patience is a virtue.
When you exercise hard your body gets hungry and you may end up just eating those calories right back. If you're not being careful about your eating, your results could be very slow or non existent.
It takes hours and hours of cardio to burn off a pound. Your main investment, for the amount of payoff you see for the effort, should be in your eating habits first, supplemented by exercise.
Do you use a calorie tracker like myfitnesspal, noom, fatsecret or anything? You might find that really helpful.
I would say around four weeks. I seen a fitness poster once that read, 4 weeks until you notice 8 weeks until your family and friends notice and 12 weeks before the world notices so keep going. Lol I hope that helps and good luck
Your workout days at the gym sound very relaxed.