MrCuddles:
As of right now I’m done with school and she only as one more year and we currently split the cost for everything. She also has a side gig where the content she makes she sells which is how we’re paying for the food she eats. And I do see myself being with her for a long time so I don’t have a problem being the provider. As for the future you are right I’ve haven’t thought about all of that stuff yet but I’m glad you mentioned it because it will be something we have to think about
Yeah, it's super important to think about that. Not having a plan will put huge amounts of stress on your relationship. For now, I'd limit her gains to the outer edge of her comfort zone. It's cool that she has a side gig where she sells fetish content, but most fetish models only do that for a few years before tapping out. So, I'd figure out something more sustainable in the long term.
Can you two see her doing this in the next 5, 10 years? Will she have enough income from that to keep up with her food costs? The bigger she gets, the more she'll need to keep eating. Speaking as an extreme feeder, the food costs alone add up really fat after a certain point.
If you see yourself with her for decades to come, then there isn't a rush. Take the time to sort things out. Plus, if you go too fast or hard, she'll get sick and tap out. I see this happen a lot with extreme gainers and rapid gainers. They keep chugging along until around the 350 - 600 lbs range when everything starts to go wrong. Sometimes, they even have to completely give up because of the damage they've done to their body.
If you want to reach immobility, you need to focus on sustainability and not speed. Plus, there's a non-zero chance she might change her mind. I've met a lot of people who wanted to be immobile in real life, but at some point, they realized they preferred fantasy to reality. Most of them settle for being very fat with limited mobility. Only a small handful follow through because once you are immobile, there's essentially no going back.
Again, I'm not kink-shaming. I'm only saying this so that you and your partner achieve whatever outcome makes you two happy.