Fathwa, - Irregular bleeding…should I not take a dispensation on this issue?

Question:
Recently I have noticedthat my menstrual cycle has become longer than
the normal 8 to 9 days which it lasted. Now, my regular cycle has
moved from 9 days to 10 or 11 days. But according to the Hanafi rule,
I must begin to pray on my 11th day. However, if I know that this is
part of my cycle, can I not take a dispensation onthe issue?
Answer:
Assalamu alaykum
Menstruation is the monthly discharge of blood that lasts from three
to ten days. Any blood released for less than three days or beyond ten
days is not considered menstruation[Maraqi al-Falah]. The fact that
you consider it menstrual blood is not legally relevant.
Its exceeding ten days means that it can not be considered as such.
Rather it will be considered abnormal uterine bleeding (istihada) so
after the tenth day one must perform a ritual bath and start praying.
In addition, as the bleedinghas exceeded ten days one must rely on
one's previous menstrual period ('aada) to ascertain how many daysof
the bleeding are to beconsidered menstruation.
So for example if one's last menstrual period was 9 days and then the
next one was 11 days, one would perform a ghusl and start praying on
the tenth day and onewould make up one day of prayers as the
menstruation will be seen to have ended on the 9th day and the tenth
will be considered abnormal uterine bleeding (istihada). There is no
difficulty or hardship in this. It is purely submission.