Wow… I responded to that question 2 years ago… so here is updated experience …while my mom is still waiting for her GC process, in dec 2022 I took her to Delhi consulate for a tourist visa interview. First, although we were told “come in any time”, when we arrived there were 100+ people in the line. They informed me applicant goes in alone and I cannot go in no matter what. I asked guards to get my mom a wheelchair and as a result she was allowed to go in out of line and not sure what changed, but they asked me to go in with her and push her wheelchair. Soon after they realized I am a US citizen which created more drama due to lack of awareness. Apparently there is standing order to send US citizens thru separate door.
All ended well as I was in with my mom pretty fast.
The Vida Officer was an American lady who was proud that she could speak in Hindi as she wanted to speak with my mom directly. However her Hindi was barely audible and understandable for my mom who was easily 5 feet away and behind a huge glass. VO declined the visa twice to her within 5 minutes (coz her I-130) was contradicting her tourist visa app. Considering we had nothing to lose I jumped in loud and clear to her and spoke on behalf of my mom. (I don’t recommend that but I did). She approved visa and we came out.
My point, no one will answer for an old parent as effectively as the petitioner. Try to go in. Ask for wheelchair.