Diet when TTC

I'm on a highly restrictive calorie diet just for weight loss... it's very low carb , low fat, sugar free (including fruit), and really only allows for a handful of foods.... I think it comes out to around 900 calories a day, a bit more on some days...it sucks but I am losing the weight... my main reason for the weight loss was to get healthy and to be healthy enough to conceive....Please don't comment on the diet I'm looking for advice on TTC.... do you think I can continue the restrictive diet while trying to conceive? I would stop once pregnant and just stick to healthy diet with more calories and variety.