Hello,
I also don’t see a tiny house (with special room concepts) in the plan, but rather a "small standard house."
Based on the Town & Country 100 (8.0m x 8.75m), I made an adjustment for you. It even has another room upstairs, so each occupant has a bedroom (I count 3 people, 2 adults, not a couple + 1 toddler).
If the admittedly very open kitchen area on the ground floor is not pleasing, the kitchen can be separated as a kitchen-living area (including dining table) (dashed wall).
To now reach the 8.5m, if necessary, the living room and upstairs the child’s and guest’s rooms will have to do without 0.25m. However, I think the living room would still be wider than in your floor plan.
