Case: I'm currently in US on L2 (dependent on my wife's L1B).
Wife's H1b got picked this time and she wish to postpone accepting the H1B because if she gets on to H1b right away, spouse( I in this case) will become ineligible to work ( on H4) until she has approved I-140 which is going to take 1+ years.
Question: How long can she safely keep the H1b lottery acceptance active without losing it ?