Welcome! Yes, the rules are we need pictures
My fawn girl was terrified of the stairs. So I stood next to her, with her rear against my legs and moved each foot up one step, very slowly and praised her the whole way. I had a hand on her chest on the way down (so she wouldn't jump) and did it again 1 paw at a time. It took almost 2 weeks for her to master the stairs, but she did. And I'm ridiculously proud of her.
Patience and lots of it will be your best friend for the next few weeks while you new love settles in