Hello Clayton Gilbert, welcome aboard Filipinas Roses

Yes, an appeal will take around 6 months. Maybe more depending.

Not sure who advised you to appeal though as based solely on the information you shared you did not comply with the immigration rules financial requirement.
Seems you may not have provided sufficient evidence to convince the Caseworker of a genuine relationship also.

I think you need to carefully review the notice of refusal against the rules and re-submit a new application rather than wait for the appeal decision which was not made in error by the ECO based on your above post.