Kindly refer to the following link(s):
How to lift major impurity if you are sick and cannot take ghusl?
Major impurity due to wet dream / end of menses while traveling, cannot perform ghusl
Must we put water in the ears while making ghusl? Ear infection, has cotton in ear, is ghusl valid?
Cannot perform ghusl before fajr due to chronic illness, what to do?
Tayammum in Extreme Cold instead of Ghusl for Major Sexual Impurity?
Is it obligatory to untie braids before ghusl for Menses & Janaba (Hadith?)