No.
there is no need to “battle” weight.
set your family up with a healthy lifestyle. 80% healthy food, portion control, 3 meals a day. Ignore the fad diets.
concentrate on NEAT- non exercise calorie burn. So walk where possible, cycle, getting out and doing things at weekends. As little sitting down as possible.
find an activity you enjoy and will stick to. Whether that’s yoga or cross fit or birdwatching.
children the same. Decent healthy diet and don’t fall into the trap of worrying about them eating enough, or finishing their plates, or having x mouthfuls before they can finish/have pudding. Activity right from the start, toddle groups, take them to the pool for a splash, parks and soft play. When they’re old enough a balance bike, swimming lessons, dance/gymnastics, or martial arts to give them a good physical balance. As they get older try lots of activities and sports.
we have a rule where I don’t buy crisps/sweets/chocolate. If we want some we walk to the shop. Either we don’t want it that badly, or at least we get out and walk rather than just reach in the cupboard.
weight will have a genetic component, but it is primarily lifestyle. I know thin kids with fat parents- those kids tend to do a lot of sport. I know fat kids with fat parents- those kids eat and move in the same way as their parents. I’ve seen a fat kid with a super fit parent- the child was in a buggy on the school run until he was 5 because the mum ran to school and home, then taught exercise classes all day.
i “battle” with my weight because I was brought up by a mother who was very critical about weight and put me on my first diet at 9. My kids are both healthy and couldn’t give a shit about their weight- one does athletics, the other dance and they eat when they’re hungry. I’ve always tried to be very relaxed around food, if they want something, they have it. No rules, just the basic idea that they should be eating a bit of everything- some choices are better than others like porridge vs commercial cereal etc.
sorry it’s long, this is actually a sore spot for me having had a lifelong ED- I was determined my kids wouldn’t see food as an enemy.