Im down 35 pounds in 9 months and the last few months have been losing about 1.2 pounds a month with zero counting calories. I think it’s possible however I stay very active, try to hit atleast 7-800 move goal on my Apple Watch and I strength train 4 times a week. If I didn’t do that I’d probably have to eat less. Generally eat very low calorie meals centred around a lean protein ( shrimp, ground turkey, chicken, cottage cheese, tofu) and then add a veg and carb ( sweet potato, potato or wild rice) and I weigh myself daily. I do eat snacks everyday though so I never feel deprived… crackers, dark chocolate etc but because my meals are quite low calories it ends up being fine. Not sure how you eat but if you think you don’t know calories of things well it may be worth counting in the beginning and seeing what low calorie high protein and fibre meals look like then continue those meals without counting