I would get yourself checked out rather than a loose '6-8 weeks before your metabolism gets back to normal' assessment.
I have some simple recommendations for you.
1. Choose a quality over a quantity eating plan.
The saying "You are what you eat" is true.
If you eat too much of anything then you'll wake up one day and see too much of YOU in the mirror.
Try breaking your daily food intake into 5 or 6 portions and eat no sooner than 2 and no later than 3 hour intervals.
This ensures a steady flow of nutrients to the working muscles without leaving to much behind for fat storage.
2. Increase your fat intake, fat does not make you fat! In fact one of the most saturated fats with a percentage of 63%Saturates actually speeds up your metabolism and helps you lose fat!The fat is Coconut oil and is a must on your shopping list, just makesure this is the only oil you cook with.Here’s a few other oils I’d recommend, extra virgin olive oil (don’tcook with it), flax seed oil and hemp seed oil.
3. When increasing your fat intake, cut down on your carbohydrate intake.Way too many people each too many carbs. Instead of the average 60%of carbs per day aim for 25-40% and make those carbs fibrous vegetables like broccoli, Brussell sprouts and alfalfa sprouts. You can still have your rice and potatoes just make sure they are sweet potatoes and brown organic rice.
4. Eat clean healthy foods.
If it wasn’t around even 1000 years ago then there’s a very good chance that it’s got some form of preservative or additives
5. Drink more water. Aim for at least 1 litre of water per 50lbs of bodyweight. We rely and function on water just as our vehicles rely on petrol or diesel.
You wouldn’t expect your vehicle to work without any kinda fuel would you?
Need I say more?
6. Eat protein with every meal. At least then if you do have carbs youcan slow the rate of the Glycemic Index or GI (rate at which food has an effect on blood sugar) down so you begin to drip feed energy throughout your body.
Good forms of protein are things like chicken, fish, eggs and hemp seeds.
Simple, common sense...