Maybe a month or so my brother can water them for me but that's it what about Keshia ?
Water and mix nutes and measure pH and PPM? Sounds more like it's his grow! If he can only water then you aren't going to get anywhere near as much out of your plants. You might want to look into "super soil" which you mix so it contains all the nutrients it needs for the grow.
Tape Keshia up and support the taped branches. Hope for the best!