Question

you may forget the rules quickly change passive voice

Answer 1

Answer:

The rules may be forgotten by you

Explanation:

The passive with modals is build up as follows

Direct object + may + be + Verb in past participle + by + agent

Answer 2

Answer:

$\huge\underline\mathfrak\pink{Answer}$

Rules might get forgotten by you quickly.

$\tt \pink{hope \: my \: answer \: helps!}$