Hey Cheyanne 🙂
Well I know EXACTLY what your talking about! 🙂 I’m not sure if I mentioned it before to you but My Ms Nutini ( Full name Teeny Tiny Nutini) also stopped growing when she hit 6 months old .. She will be 4 this October and up until a year ago she only weighed 5 1/2 lbs!! It was determined she was probably born with a shunt in her prtuitory gland which controls growth hormones.
She is just so small and she is only 2 1/2 inches wide 🙂 she now weight about 7 lbs and she only gained weight when her brother (from another mother 😆 ) Buttons died 8 months ago… I also tried to free feed her but it was very difficult because Butons had to be kept on a strict diet..
I would maybe find another vet just to get another opinion.. As a general rule of thumb if you can run your hand along a cats flank (side) and not feel ribs it means that the cat is of a good weight for their size..
If ribs and vertebrae are easily felt or visable then it’s more than likely a diet/ parisite issues..
Nutini is a very healthy girl just like your Lola .. It’s just she so very small.. I call her my little ballerina 😆
I would only ever be concerned if a noticed a dramatic weight loss or lack of appetite and your not dealing with those issues.. Another reason for underweight cats can be hyperthyroidism .. This however normally only effect older cats and is normally diagnosed when an owe we notices extreme rapid weight loss , rapid heart rate and tiredness.. But even this can be medicated and controlled..
I’ll see if I can find one of my old posts about Nutini.. I too once thought something was wrong with her but she’s just different …just different like every other kitty I have 🙂