In a word, yes.
In many words: (You should consult your physician first. I don't wear a labcoat and am not a doctor.)
First, in order to make progress, we've got to identify the metrics used to assess your progress. Just using the scale is not going to be sufficient for most people.
How they feel
How the clothes fit
Tape Measure
Comments from friends/family
The two things that will always lead to disappointment are
- Unrealistic expectations
- Unrealized expectations
With the first - it's your own fault if you set crazy goals. With the second, it's probably a flaw in your plan, or the execution of that plan.
So - you need a plan.
That starts with coming to a source of information that can explain what you need to know. Instead, you came here. That could be good or bad, depending on who chimes in.
So - first, since I have no idea what you know and what you don't, I may insult your intelligence. This is not intentional. Maybe someone else lurking doesn't know and you do. <shrug>
Forget calories. Think of calories as a metric used to measure nutrients. We don't run off of calories. They really don't even exist. Our bodies work from nutrients absorbed through food and drink that we consume. But - if we don't measure the calories, the best plans can fall awry.
3500 calories is a pound. 3500 calories is also about 16 ounces.
When you eat - you've put food into a tube. Your mouth to the ..end is one giant tube. When you eat, some of that food is absorbed to run your body. Some is stored to run your body later. Some stays in the tube. What you eat determines what runs your body. How much you eat determines what is stored to run your body later. The fiber content in your food (and other insoluble foods) determine what stays in the tube.
So - what you ate this morning is still in the tube, or is being used to run your body now. If you get on the scale daily - which a lot of us do - you're really just measuring your weight, plus the weight of what's in the tube. This will change throughout your day. It's best to look at trends, what you way over time. If the trend is downward, you're doing well. If not, you need to evaluate your diet - what you eat and how much you eat.
To lose more than 1 pound a week - you've got to reduce your intake and/or increase your calories burned beyond 500 calories a day. (500*7=3500, or 1 pound)
On average - if you walk for an hour a day - depending on your mobility and the terrain, you'll burn at least 300 calories. I'm a big guy, I'd burn about 700, maybe 800 calories.
We're all different, so what you burn is not going to be found online. Even the Fitbit, for all it's technological marvel, is only a guess. An educated guess, but still a guess. But, it gives you a great starting point.
Measure the calories of what you eat every time. If you can't be sure of the calories - look it up on the internet and guess a higher value, erring on the side of caution. Try to lift weights followed by quick, intense movements for best results. If you're not confident in your ability to do this, you should probably just take things slow and work into it.
I recommend you read this just to have some information backed by research.
https://bengreenfieldfitness.com/2013/12/diet-myth-news-flash-eating-less-cause-fat-loss/
To lose more than 1pound a week, you'll have to burn 1000 calories more per day than what you eat in day. If your body burns 1200 calories at rest, and your activity level through the day cooks off another 1000 calories, than a 1200 calorie a day should do the trick. But, even then, it's a very slow process. You didn't get fat overnight, you're not going to get in shape overnight either.
Remember, you're after optimum health - not optimum weight. Get a check up, have your blood pressure evaluated, blood tests done, etc.
Those who have no idea what they are doing genuinely have no idea that they don't know what they're doing. - John Cleese
