TS/SCI CI Poly contractor now working at the secret level will I lose TS at some point?

I am getting mixed answers and it’s frustrating. I work 100% remote on a contract which is extremely rare so I want to try to hold on to the job if possible.

However I am reading that if I stay on such a contract I will eventually lose my TS and be downgraded to secret.

The company that I am contracting at can only clear up to Secret.

What is the reality here? I am applying to every part time role that can hold my TS/SCI out there just in case that I can even entry level roles but can’t get any traction since it’s so bad out there.

Thanks.