“the Senate can’t pass an unlimited number of reconciliation bills; typically Congress passes one per year. Given a legislative backlog in 2020, Democrats were on track to do two reconciliation bills in the near term — one addressing the budget of the 2021 fiscal year, and one for the budget of the 2022 fiscal year.
According to a Schumer aide, his team is now trying to make the case that Democrats would be able to pass up to three budget reconciliation bills this year. In arguments to the Senate parliamentarian, an in-house procedural expert, aides are pushing for a third bill by citing an arcane rule that hasn’t been used before.”
…
“Whether Democrats are ultimately able to do this is heavily dependent on the parliamentarian”
https://www.vox.com/2021/3/29/22356453/chuck-schumer-budget-reconciliation-filibuster