Let me start by saying i live in a foreign country where health care is not the best. The doctors are 20 years behind, at least! Everything my doctor says i take with a grain of salt, although looking back i have made MANY mistakes based on his advice.
I recently went in for my twins 6 month check-ups and he informed me they were not gaining enough weight. I'm supposed to come back when they turn 7 months to check it, and if it's not sufficient i'm supposed to start supplementing with formula. I have worked extremely hard to build up my milk supply and the thought of giving them formula just like THAT just doesn't feel right. He suggested giving them two feedings of solids instead of one. That seems like too much to me, and i thought breast milk had more calories in it? In the mean time i decided to go back to taking my fenugreek and blessed thistle in case its a milk supply issue, i also am trying to feed them for a little bit longer at each feeding. I typically have 3-4 letdowns per feeding, more in the evening. When they wake in the night, i bring them both into bed with me, and they feed quite a bit until morning. Slightly difficult/annoying, but i do love the night time snuggles and the extra sleep i get.
Here are the facts.
Baby A was born at 5 lb 3 oz, Baby B was born at 4 lb 1 oz. They were born at 36 weeks. I don't have all the weights in between, but I'm pretty sure it was 4 months when they doubled their weight. Now, Baby A is weighing 13 lbs 9 oz and Baby B is at 13 lbs 2 oz. I know this is sort of relative, but they're in 6-9 month clothes, so i never suspected any weight issue. He says they're weight gain has slowed and they are no longer "thriving". Somebody mentioned in another post something about Vitamin D deficiency? I have neglected to take my vitamins for 2 months, so i started taking them again.
So, when should i worry about their weights, and what should i do about it?
Extra detail: They're both rolling over both ways just fine, and they seem close to sitting up on their own. The smaller one lags her head slightly when pulled to a sitting position when she is sleepy, but they seem fine developmentally speaking. Third edit (brain a bit fuzzy): they poop once or twice a day and have 5-6 wet diapers.