Im 35 years old and live with my 81 year old grandmother

By the time my rent and bills are paid, I have almost nothing left over. Inflation/rent hikes have obliterated me.
Paying rent today. Thankfully the place the kids live is owned by a little old lady who knows the situation we are in, so their rent has stayed static at $2,150/month despite the property management company that runs the place arguing that a 2BR should go for much more. (I argue that it is a 1 and 1/2 bedroom, the room my oldest sleeps in is a converted powder room with no window.)

When I went to pay rent on my place, I saw that there is a notice of a $200/month increase if I go month to month next month, or a $100 hike if I sign a 9 month lease.

It is currently $850/m for my 150sqft studio.