Conditions & Fundamentals of Hajj and Umrah

Q: My wife and I went for hajj alhamdulilah. We completed our umrah and waited for the hajj days. The morning of the hajj day, very early, because my wife was pregnant and it was the 8 month of her pregnancy so after advise from prominent ulama they suggested I do the saee for the tawaaf e ziyaraah before the hajj starts. So the morning my wife and I did a nafl tawaaf and with the intention of saee for my wife I joined her to do the saee. In this way we completed the saee and then joined up Ml Olgaa to to do our hajj. 

After 5 days of hajj we stayed one extra day in Mina. The next day we came to Makkah and did our tawaaf ziyaraah and my wife did not do the saee as we, according to the advise, she did it before the hajj days, actually the morning before the hajj started. Please advise if this is correct.

Q: In Arafaat, when performing Zuhr and Asr separately in the camp, can one perform nafl salaah at all? Is it advisable? 

Nabi (sallallahu alaihi wasallam) didn't because he joined Zuhr and Asr then after Asr was makrooh. But what about us? 

Q: My husband and I would have been accredited for Hajj this year but he asked SAHUC to remove our names before the list came out as he says he cannot afford it and Hajj is not Fardh on him. 

He does own 2 cars but does not have enough disposable cash to pay for the trip. 

Is Hajj fardh on him? I can afford to pay for my own Hajj

Q: What are the differences between hajj and umrah?

Q: I have planned to go for Umrah in July 2025 along with my mother (age 62 years). We will go together and perform Umrah together. But after that, my mother will stay at the house of her own sister's daughter. She will stay there for 15 days. Meanwhile, I will return alone after performing Umrah. She will also return alone from Makkah to Delhi and I will pick her up from Delhi Airport. Whether, returning alone from Makkah to Delhi for my mother is permissible.

Q: During tawaf on the first floor there are times where construction barriers are blocking off certain areas. It is such that we have to walk diagonally where our shoulder moves away from the Kaabah and it seems like our back is facing the Kaabah (but we can't be certain because we can't see the Kaabah from the first floor). It happens few times during tawaaf. What should we do in this situation?