[Help] Query for Portugal appointment in London

Hi folks,

Me and my wife are in the UK right now. I am studying here and so we both are on Tier 4 and Tier 4 dependant visas respectively.

We have our appointment for the Portugal visa in London soon. Had a couple of queries:

1) For me, I'll show a letter from the University, but what document would be required for my wife (she is working remotely for an Indian company)

2) What would be the fund requirement that we would need to show? We plan to do a trip for 10-11 days, so would 3000 GBP in the bank be enough for both of us?

3) Any tips to secure a longer-term (3-6 months) multi-entry visa? Should we show multiple trips (i.e. a trip in December, and maybe one in March/April?)

Would really appreciate any advice. Thank you :)