Is it really a Roth IRA if you contributed via the TSP, and not a qualified after-tax Roth account in your TSP account? Workplace Roth plans are NOT the same as IRAs and they have very different rules. Generally, you would set up a Roth IRA at a bank or brokerage of your choosing on your own. You can’t contribute to most workplace plans except via payroll deduction and you can’t make retroactive contributions. (The limit is also much higher than $6000 or $7000 per year.) You need to know exactly what kind of account you have.
