Yes that is essentially correct. You believe the process of glorification requires a period of time after death (in purgatory). Protestants believe this happens instantaneously, just as Justification does.
And please know I never said sanctification “stops” at death. It is completed at death because Christ finishes it.
The period of time language is controversial among Catholics. It COULD be an instantaneous process.
How do you construe this:
[2 Cor 3:18] And we all, with unveiled face, beholding the glory of the Lord, are being changed into his likeness from one degree of glory to another; for this comes from the Lord who is the Spirit.