I haven't read the wording of the reasoned amendment, the Guardian has outlined what it contains -
"The aim would be to pass a so-called “reasoned amendment”, which halts the passage of a bill. It means the bill would not pass its second reading, saying that provisions “have not been subject to a formal consultation with disabled people, or co-produced with them, or their carers".
It also says the bill should not pass until the Office for Budget Responsibility can publish its analysis of the employment impact of the changes this autumn. The amendment adds that most of the additional employment support funding will not be in place until the end of the decade.
It notes the government’s own impact assessment estimates that 250,000 people will be pushed into poverty as a result of the provisions, including 50,000 children. It calls for an assessment of the impact of the changes on health or care needs and for the conclusion of other reviews.
The amendment would need to be selected by the speaker, Lindsay Hoyle, and gain the support of opposition parties to pass, and there is no guarantee of either."
Seems reasonable to wait for the analysis to come through.