Hello. Extra wight is not healthy in pregnancy also. It can lead to few health hazards like raised blood
sugar, overweight baby etc. Making a diet plan will not go the way we want in first trimester ( 1-3months), as she will struggle to eat with nausea, vomiting and bloating. Again we can't go for rapid weight loss, as baby has to gain weight.
You can contact me directly to have detail discussion about it.
Regards