advice for adjusting to a non-abusive environment

i (M19) & my long-time partner (F18) are both currently living in our respective abusive households, though we have nearly everything packed for moving into our first apartment together. both of us mostly definitely have CPTSD, as well as other diagnosed disorders & suspected disorders.

i already know that adjusting and fully decompressing will be a difficult and emotional process to say the least. does anyone who is in/has been in similar situations have any advice for handling this? i am a full time student & a part time manager at a retail store, so the last thing i want is for my decompression to affect my ability to get tasks done.

i also have bipolar II, so i have a feeling that this already-emotional process will be heightened 100x in my brain.

any suggestions, coping skills, etc would be appreciated. i just want to try to mentally prepare myself to the best of my abilities.

thank you!