Any hair stylists?

I need advice. My natural hair is blonde but I’ve been dying it for years. I do it myself and it doesnt always turn out good. I finally got it to a blonde I liked :

But I had a few hours away from the baby and impulsively dyed it a level 5-6 brown and used a red protein filler. I’m a cool toned person and look much better blonde and immediately regretted it. It’s been 4 weeks and I want to know if anyone has advice for me to get back to this blonde.

Please don’t suggest going to a stylist, im a new mom and just don’t have extra time or money :( I usually use hair dye from Sally’s.

What can I do? Thank you :(