Trying to get back on track

Last week was a real struggle and this week I have to try and get back on track. The lack of sleep and mom going down quicker than I thought is really getting to me. I have to let my husband and other son stay at our place and me and my youngest son stay with mom. I am so ready to have my family back together. I am so stressed with trying to take care of 2 households. Now I am having less and less sleep so I am starting from the diet plan I do good for breakfast but then the sleepiness kicks in and the rest of the day I long for sleep and it's not there so I go to eating things I don't want to eat. I wished I had help but I don't I would just love one day away from mom but I can't. I have got into a sweet tea kick instead of my water. I need help and advice on how to get back on track. I'm so stressed and tired. Need help I know some people stay busier than me and can still do it so an advice is helpful. I am so ready to give up but I know I can't