Fiance doesn't help with planning- i have no support.

Maybe if you can catch him for a short amount of time just to debrief him of what you've gotten so far and what you'd really like his opinion on (but just give him a couple choices to choose between aha that way the choice is easier to make right then and there). That way it's just super quick and you can get a lot out of him in a short amount of time.

Could you sit down together and set a designated “wedding time” you tackle projects together? I recently brought up the idea to my own FH, he wants to help but he gets frustrated doing wedding stuff on his own.

I wouldn't run, but I would tell him you will have to cancel the wedding if he can't help you. You told him you could not do this on your own, you've asked for help, you have kept your end of your promises and he has not. If he didn't want an elopement and wanted a wedding he should be spear heading this not you. It's unfair and not acceptable for him to dump all this on your lap.
That being said you knew people were going to tell you to run because you know this is a red flag for later, if he's unreliable now and not able to upkeep his promises he likely will do it again later, you should sit him down and have a talk with him. Tell him it hurts your heart, breaks your trust in him and that you're uncomfortable starting a marriage this way. If he's any kind of decent hell realize he needs to get his butt in gear and change his ways.
If he doesn't get his butt gear and change his ways I'd postpone or cancel the wedding until you can get professional help, that would indicate he's got a problem bigger than organization.

I am in the same boat, but I knew this going into it. My fiancé wanted to just elope and go to the courthouse, but I've always wanted that "big wedding"

So we compromised and had our courthouse wedding 11/9/18, and will be having our "wedding" on 11/9/19 (95 days away... but who's counting).

I knew he wouldn't be much help with the planning as he wasn't super keen on the idea of it to start, but will do it for me and our families. I honestly didn't know how hard it would be to plan this wedding on my own, but luckily I have a had a good amount of help from friends and family.

I'm sorry this is happening with you, but the best advice I can give is remember that although this is an important day for us, it is only one day. You have the rest of your lives together and don't let planning and the stress of one day affect your life together. Good luck!

Many of us are planning our weddings without much help from our fiances. It's just the way it is. But if you stay organized, and have a good timeline for when tasks need to be completed, it can be done all by yourself.

My FH is wonderful, but all he cares about in terms of the wedding is the music. So, he's been really present during those discussions. But everything else? He gives me his standard line, "whatever you want, babe. whatever makes you happy." Really? It would make me happy if you tackled half these tasks on my plate!!

I'm not trippin' because we still have plenty of time, and I'm a very organized person. My advice is to use all the planning tools at your disposal, and reach out to friends, family, even here to us whenever you are feeling overwhelmed. You don't have to go through it alone, even if FH isn't much help to you. Good luck!!

Here's my real question is are you involving him with wedding planning or just telling him what to do? Is he helping to make decisions? Ask him what he's excited about about the wedding. What does he care about in wedding planning? Or does he not view it as his day too? Also the fact you mentioned that you don't want "leave him" advice means that someone has either told you that or you are thinking that. Either way the stress of planning a wedding probably isn't the only reason someone would think that.

My fiancé and I struggle to be able to plan together so instead we try to at least weekly/monthly (whatever happens to work at that time) sit down and go through things that I've been trying to decide between. We tend on figuring stuff out, ordering it and moving on so we can enjoy other things

You said he's working 2 jobs now? Are they both full time? How many hours is he working? He might just not have the time. I've worked multiple jobs before and when I was home, all I wanted was to relax (and sleep). Maybe you could pick out a few songs and have have him pick the one he wants to walk down the isle to. And next time you have a few minutes with him, ask him what he loves about you and send it to your pastor for him. Try to stay strong and focus on the positive. You're about to get married!!!

My fiance really doesn't help with the fine planning of our wedding. He more so likes to have a say in major decisions such as the honeymoon, wedding party transportation, catering and things of that nature. It's actually really good for me too, because I don't expect him to be so involved with the nitty gritty details. Maybe your fiance is just really busy and swamped with work?