It is normal to feel exhausted continue getting in as much Protein and Water as you can. I know the first couple of weeks getting 30 grams of Protein down seemed impossible. It gets better as time progresses. I got a burst of energy on week 3 and then lost it after doing several projects and cleaning my house. Week 5 is better I am having energy enough to make it to the gym and do a few things. Remember it takes time for your body to heal and adjust.
If mom lives with you, respect her but make firm rules for her to live by and be willing to let her move if she does not like it. Your home YOUR rules!