Glad to hear from you.
What is your support like in real life now you've chosen to do this?
It will be hard but you've got this! You have time to prepare, be that sorting financial support, collecting clothes and cots etc - all but mattresses are fine second hand. I had so many hand me downs and stuff via local free Facebook groups then lovely new gifts from friends and bits I couldn't resist. So much better for the environment and hardly worn for long by babies so practically new anyway.
You can do NCT classes for next to nothing or free depending on your income. They do teach you stuff but more importantly give you a support network of mums in the same position as you with their baby age wise which helps so much for practical and emotional support.
You have time to find some talking therapy if you want to help you focus on you and to feel stronger in yourself really for baby arriving.
See this as a fresh start.
I went into parenthood prepared for the worst, imaging no sleep, colicky baby, so much poo, crying and exhaustion and it wasn't anywhere as bad as I thought. Yet it's tiring and it will be harder with nobody there every day to tag but so many women do it. Single parents, women with partners in the military or who are away a lot over night for work.
Reach out for help and accept all offers for help. Batch cook for lady microwave dinners when you are tired in those early days. Stock up on chocolate too!