Mizter T writes:

tfl.gov.uk/Paddington-improvements
or
https://tfl.gov.uk/travel-information/improvements-and-projects/paddington-station-improvements

Escalator replacement and a new walkway to the Betty Line platforms.

Lancaster Gate (Central Line) is a good alternative option outside of
peak times - under 10 mins walk away.

Depending on where you want to go. If you wanted a station on the
Bakerloo line then walking along Praed Street to Edgeware Road is
probably the best option.