Here is Fiji's US embassy website:
http://suva.usembassy.gov/general_information.htmlThey say nothing about direct consular filing availability, but you can call them and ask if they allow it (ask if it is possible to submit I-130 petition directly to the embassy).
However, even if they allow it AND you can comply with all their criteria, then you will need to cancel your currently processed I-130/I129-F before filing I-130 directly. You can not have two I-130 processed at the same time.
So, if I were you, I'd get copies of all work done by your lawyer and then fire him
From your timeline, he waited 2 months between NOA1 for I-130 and filing I-129F. Unless I missed something, he is lazy and will cost you time, not just money.
As is, you can simply wait out and see which petition (I-129F or I-130) gets approved first (hopefully within 1-3 months), then you will need to do paperwork for NVC and then you will have your interview. If you are not comfortable doing the paperwork yourself - get another lawyer, hopefully a better one...
Consider that a lawyer will not collect the needed paperwork for you - YOU will likely have to order IRS transcripts, police records, get translations of all kinds of documents yourself! YOU will have to prepare evidence of bona fide relationship - e-mails, phone records, letters etc. or if you live together in Fiji - evidence of co-habitation.
Good luck!