Need help

I was 160 when I got pregnant, 184 was my last weight of pregnancy and now I’m at 158. My newborn has her days and nights mixed up so I’m up late at night and take lots of mini naps all day. I don’t even eat anything until dinner time which can be between 5-8 pm and then I’m done for the day I don’t eat anything else.. it’s hard for me to lose weight and if I do I’m nervous to gain it all back because I don’t eat right now, and I don’t want to get back into my regular routine and then start eating normally and gain it all back. I’m not active, I breastfeed here and there maybe 2x a day and I eat like crap. My goal is to get to my pre baby weight the first time I got pregnant which was 118. I have a long way to go but I just find it hard to do anything right now and I’m not feeling too positive on weight loss. I guess I have no motivation. And it’s very hard be consistent and break bad habits and start good ones.. any kind of advice would be helpful and maybe some positive energy 😌