Fast way to earn credits?

I'm looking for a fast way to earn credits in a short amount of time. I recently started a second account because I felt my old one was so far behind it was useless to keep going. Anyways, I'm in need of credits because of the upcoming Thrawn event. I've got a full 6* team of phoenix, with Ezra and Zeb being 7*. Kanan, Hera, and Chopper are very close to 7*, but I'm in need of credits, as I won't be able to get them to 7* before the event ends. If I'm correct it costs 1M credits to get a character from 6* to 7*, and I'm very low on credits. I've looked at other posts about credits, but they all have the answer of "build a scoundrel team." This isn't an option for me right now, because of my short time frame. If anyone could help that would be wonderful! Thanks for reading my pretty long post.