The answer
Not by simply adding words while retaining the same wallet. A new randomly generated 24-word seed normally creates a different set of keys and receiving addresses.
What to do next
Generate a fresh wallet on a trusted signing device, verify its receiving address and transfer assets on-chain. Keep the old wallet accessible until everything settles.
Trezor hardware wallets
Potential cold-storage product; not a substitute for safe backup procedures. Availability, supported assets and local eligibility must be checked before signing up or buying.
Visit Trezor hardware wallets ↗Official provider link · Compare suitability and availability before choosing.Related crypto questions
Frequently asked questions
Will my original Bitcoin address remain unchanged after making a new seed?
No. New seed material derives different addresses.