Keep the first attempt simple. Let your pet choose whether to engage, and use their response to decide what to try next.
Set it up
Prepare a quiet room with a hiding place, resting area, scratching option, food, water and litter facilities separated where space permits. Check windows and small escape gaps before bringing the carrier inside.
Make it work for your pet
Open the carrier and let your cat emerge on their own. Sit quietly rather than reaching into a hiding place. Keep a predictable routine and expand access gradually when they are exploring comfortably. Introductions to resident animals need their own careful plan.
Keep it comfortable and safe
Monitor eating, drinking and toileting. Contact a vet if your cat is not eating or seems unwell. Do not assume every sign of withdrawal is simply settling in.
A quick review afterwards
Notice what your pet chose, what they avoided and what made the task easier. Keep one useful observation for next time rather than trying to perfect everything in a single day. A routine you can repeat calmly is more valuable than an elaborate setup that becomes another chore.
Further reading: Cats Protection: cats and play. This is broader background reading; the checklist above is Pawno’s own editorial guidance.