Times Cryptic Jumbo 1506

[NeilMunro]

Very grateful for all help with these clues please.
33dn: “Land and stop to be heard, becoming frivolous (11).”
35dn: “Extra reading for one filling empty seat? (2-8).”
44ac: “Feature of progressive female seen as fearsome (6).”
49ac: “Exploiting something, being top earner? Nothing suitable (6,3,4,2,2).”
53ac: “First person among new leaders is a female (9).”

[Lie-in King]

33d Lightweight - 'light (land) weight ("wait"; stop, heard)'
35d By-election - 'bye (extra; cricket) lection ([a] reading)'
44a "...pr OGRESS ive..."
49a Making the most of it - 'making the most o (nothing) fit (suitable)'
53a Esmerelda - 'me' (first person, in) anag 'leaders'

[NeilMunro]

Many thanks!!!

[watersa]

49ac answer: making the most of it
making the most (being top earner) (o) nothing
f it (suitable)