Yes you only file one Joint return with both your income on it. Yes transfer from your husband's return to start 2025. Your 2024 return won't transfer so you will have to enter all your 2025 income. You don't need to add your 2024 info unless it asks for it as you go along or you have any loss carryovers or something to enter. When you start 2025 with his info you go to My Info and change his profile to Married. Then it will open up to enter your name and personal info.
Then when you enter any forms like W2s or 1099s be sure to pick who it is for. That is very important. When you get married you are considered married for the whole year even if you got married on Dec 31.
Getting Married FAQ
https://ttlc.intuit.com/community/tax-filing-status/help/what-does-getting-married-mean-for-my-taxes...
Tax info on getting married
https://turbotax.intuit.com/tax-tips/marriage/getting-married/L0DvEUlEC
