maybe start off with something that's a little more nutrient dense and slower absorbing than white rice. to be honest, white rice is still my last carb of choice. sweet potatoes are great. another good way to introduce carbs back is bananas.
another important thing about adding back carbs, is that you can't prepare your same exact keto meal and just add in a cup of rice, or a baked potato. that's just eating more food. that doesn't work.
if you're doing find on VLC, i don't think you have to introduce carbs into your diet. i find that most people will eventually not do so well on VLC, and will want to change the situation, and at that point, it may be easier.