Can someone offer guidance or point me in the right direction in regards to the this SS question.

Thank you in advance

Social Security Strategy – Married

Husband: DOB— 2/13/53— $3100 FRA
Wife: DOB— 4/6/57— $1350 FRA

Wife files for reduced benefits at 62,
Husband files restricted application for spousal benefits same year.
Husband then files for own benefits at 66 or even 70 and
Wife then receives increased spousal benefits that same year.

Is this permissible? Where can I find more information regarding this strategy?