Yes, you can delete the state return and start the state return from the beginning. It will not affect the federal return in any way.
See this TurboTax for deleting a state tax return when using the online editions - https://ttlc.intuit.com/turbotax-support/en-us/help-article/state-taxes/delete-state-return-turbotax-online/L8v9awRbh_US_en_US?uid=lfu9qd0f