Yes, you can! Firstbase.io works with a registered agent that can help you with this conversion. If you want to know more about the agent, please check this support article.
In order to convert from an LLC to a Corporation, the agent will submit a request to the Secretary of State office for an additional fee.
Please be aware if you already have the EIN letter assigned or it is already in progress, you might need to request a new EIN. Further information can be found on the IRS website.
NOTE: It is significantly easier to convert your LLC to a C Corp than converting a C Corp to an LLC.
Fun Fact: Firstbase.io initially incorporated as a Wyoming LLC before converting to a Delaware C Corp in 2021.