Survivor benefits
I am a widow, age 65. Initially when I visited the local SS office and presented all my paperwork, I was told that I could start collecting my SS benefit whenever I choose, and then when I turn 66+4 months I can switch over to my late husband's benefit, which is significantly higher than mine. Based on this, I chose to start receiving my benefit in January 2024, since my 2023 income is too high to collect immediately. The understanding was that I would switch to my husband's benefit after age 66. I was given a phone appointment to get the paperwork started for this. The SS agent on the phone told me this was not possible; I couldn't start taking my benefit and then switch to my husband's at age 66+4, which is contrary to what I was told in person. I asked her 3 times to make sure I understood, and she reiterated that this is the case.
My question is, which agent is correct? I can't seem to find consistent information on this.