What to do?

Im so lost with what to do,
im just so tired all the time i cant keep up to the boys, Deacan is having problems sleeping and i have no idea why, and Jason is jsut so full of energy,
I really feel like i am running on empty, everything is really taking its tolls,
Daniel has been great, he has also been very understanding and he is helping out a lot, even if its just feeding Deacan once during the day/night so i can have a break or a sleep, he is also helping around the house a lot more to and its good cos im not the one who has to do everything,
I have been trying to do everything to show daniel that i have changed and that i can keep up to all the house work, though im just not finding the energy, im tired all the time, im loosing more weight, as i am busy looking after the kids and just forget to eat,
I need to start getting my weight up againj so every day i am going to do a food diary now, and weigh myself either once or twice a week as well,