@RosyappleA, hi love, I'm sorry for your loss. For context, I'm another MC girl here, also ttc #2. I found out our little bean hadn't made it at our 12 week scan in late August.
Have you spoken to someone since your mc, love? To me, it sounds like you're still processing what happened to you, and maybe there's some grieving that needs to be done for you to feel good about ttc.
The Miscarriage Association have links to help you find some counselling services near you. I'd really recommend it - even the most supportive partner isn't the same as a professional.
Also, while I totally understand the need to start ttc again after mc, would you feel better taking a month off to just be? Bodies are very sensitive and it sounds like yours is crying out for some recovery and tlc!
Sending you an enormous virtual hug, hope your toddler rediscovers her sleep mojo and best of luck for your 🌈 baby - but please be kind to yourself on the way!