That's entirely up to you, and you don't really give enough information about yourself to make very many helpful comments.
Certainly, if you need the money to live, you might need to stop contributing. If you are not retired, have extra money, and are choosing between a regular savings account and a Roth IRA, you might stick with the Roth, because you can withdraw the contributions tax-free if needed (just like a savings account) and only pay tax if you withdraw earnings. If you are retired and thinking about estate planning, your heirs would not owe tax whether they inherited cash or a Roth IRA. But, if you need long term medical care, Medicaid can require you turn over a Roth IRA to them before they will cover your care, but they will not require you turn over a traditional IRA (as long as you turn over the RMD each year).