I had 5 massive babies and a bulge so bad the surgeon thought I had herniated but the surgery did not improve the bulge and was awful and painful for months. Don't go there.
If you have self will, time, determination and self discipline and a sense of humour instead of a sense of failure if progress is slow I can help you!
This is what worked for me:
Become a vegetarian ( or only have a tiny amount of good quality beef like steak per week).
Look up interesting ( there are many) recipes as vegetables in pretty much all forms are your friends.
If you are hungry for a snack have a carrot, then apple then a lot of pickles or fermented vegetables ( does wonders for your gut biome).
Get miso soup and add vegetables and rice noodles for lunch or dinner.
Eat highly nutritious protein and fats so tinned oily fish is fantastic, as are eggs.
All root vegetables like potatoes, parsnips, carrots make excellent bases for soups and other meals so use them often.
You'll need something sweet per day so go for berries, fruit in all forms and natural yogurt with a little honey or maple syrup and some chocolate, cake or biscuit ( but cut each piece into 4 so you get the craving of taste but only a sample size!)
Then when you roll out of bed do child pose immediately, then a few Pilates exercises ( no more than a few minutes) you can find a good app on your phone.
Try to do plank and side plank every day as you wake up and when you go to bed.
Fasting one meal per day. The object is to reduce the size of your stomach. It definitely works and you should not have more than 1 small handful of food per meal.
If you feel dizzy then whizz up a banana with a free range egg, some ice cubes and a little milk: it will be the best thick shake banana milk shake you have ever tasted.
Take up walking and break into a jog when you can and take as many breathers or rests as you need to. The idea is not to overwhelm but to do things that are pleasant.
Start with a few little changes like this but built up when you can. You will find your confidence and fitness improving.
Keep it up. Add weights ( you can buy them from Aldi) and keep them next to you and do a little over arm work daily.
When you are comfortable with this try going for a swim and only do a few lengths at first. Never try too much as the object is to get you into a weekly habit and not to put you off.
If you feel you have a complely empty stomach for a period per day you are on to the right thing.
Some people do the 5:2 diet which is fasting twice per week and if that works for you, fine. I do it when I feel like it.
So if I am busy all day I make sure I have an egg rich breakfast that can keep me going with an apple or carrot later until a light evening meal.
Or I will have a light brunch and a carrot and apple until a small healthy evening meal.
Try it. My stomach is so much improved. I used to do a trick whereby you tie a string around your waste which reminds you to hold your tummy in.
I don't even need to bother with that anymore.