@skigirl916 I'm sorry I do not know the exact answers you are looking for but I can tell you that when I went to my dentist they are offering the Care Credit Card (at their office) to apply and the way the lady explained it to me is that you can call and apply and explain the amount you need and for what and you would then make payments (if accepted or they will counter). I look forward to other replies as I want to get this card down the road as well 
Coincidentally I am on the same boat. I am technically gardening but am considering getting some work done and the office offers Care Credit...which still makes me cringe everytime I read that name. But the financing options could make something out of reach financially, in my reach.
Besides OP's question, I keep reading about Fixed Monthly Payments. I assume I could still make extra payments, right? I don't want to be locked to a payment that doesn't cover the entire amount or some weird shenanigans like that.
Must garden until 2/1/2022 to hit my goal AAOA. 
I was in a similar situation last February, needing several teeth capped/crowned. My dentist had a Care Credit brochure on the counter so I decided to apply, figuring I would use the promo plan that allowed zero interest if paid within 12 months. I was hoping for a decent credit limit so I could keep utilization low.
I was approved for $4300. My quote for the first two procedures was about $2200 so I called Care Credit and asked for a larger SL explaining that I wanted to keep utilization less than 50%. My request was denied.
My DH and I are retired on a (decent) fixed income so I also needed my monthly payments on the promo to work in our budget.
I made the decision to get one tooth done at a time and had the work done in May/June. The dentist cut me a break and this first crown came in just under $1k. The billing clerk contacted Care Credit and set up a promo plan for 12 months. I decided to pay $125 a month so my last payment will be made this month (with a $40 amount which I will pay immediately after the last auto payment).
I've already scheduled the next crown and will use another Care Credit promo plan. I don't want to chance overlapping promo plans because I've had some confusion (now resolved) with Care Credit billing. When they first set up the promo plan it was done incorrectly and monthly interest would have incurred. I was monitoring the app because I wanted to set up auto pay so noticed the mistake. Called the dentist and his clerk called Care Credit. She said that was the first problem she's had with Care Credit over many years using them.
Another glitch happened last fall when Care Credit pulled a payment two weeks early, then refunded it, then pulled again all in the same day. Luckily there was enough money in my account to cover the early autopayment. It took a few weeks to get that resolved. Apparently it was a bank wide problem that happened to many customers whose auto payments hit on the 26th. I was miffed and worried but it taught me it's safer to push auto payments instead of having creditor pull them.
The last thing I want to add is regarding credit limit increases. In late November I hit the link for a credit limit increase for the first time and asked for $10,000. Immediately granted. In December I asked for another $5k as well as in January. Success both times. So now my CL is $20,000. This is more than I can possibly use on dental work but does help my utilization. Immensely.
I poked the Synchrony bear on my other card with them (Lowes) also successfully about the same time btw. I have no plan to ask again for a long time. Very glad to have the spending limit to get all my dental work done (and a kitchen sink)!
Care Credit is under the Synchrony Bank umbrella. It's a normal revolving line anyone can apply for, and they do give CLI's I just received one not long ago (during covid).
