Jews and Christians are called people of book but their books were changed and hence need for new and final book.
Jews are allowed to consume wine. Muslim are not. Christians are allowed to consume Pork and non Halal meat. Muslims are not. This is in Quran.
If Jews were required to fast on certain days, we are not obliged to fast on those days. Muslims are to fast in the month of Ramadan and that is crystal clear.
Allow me to quote some Ahadith.
shahi Bukhari, book of Belief
Hadith no: 38
Narrated / Authority of: Abu Huraira
Allah's Apostle said, "Whoever observes fasts during the month of Ramadan out of sincere faith, and hoping to attain Allah's rewards, then all his past sins will be forgiven
Hadith no: 45
Narrated / Authority of: Talha bin Ubaidullah
A man from Najd with unkempt hair came to Allah's Apostle and we heard his loud voice but could not understand what he was saying, till he came near and then we came to know that he was asking about Islam. Allah's Apostle said, "You have to offer prayers perfectly five times in a day and night (24 hours)." The man asked, "Is there any more (praying)?" Allah's Apostle replied, "No, but if you want to offer the Nawafil prayers (you can)." Allah's Apostle further said to him: "You have to observe fasts during the month of Ramadan." The man asked, "Is there any more fasting?" Allah's Apostle replied, "No, but if you want to observe the Nawafil fasts (you can)." Then Allah's Apostle further said to him, "You have to pay the Zakat (obligatory charity)." The man asked, "Is there any thing other than the Zakat for me to pay?" Allah's Apostle replied, "No, unless you want to give alms of your own." And then that man retreated saying, "By Allah! I will neither do less nor more than this." Allah's Apostle said, "If what he said is true, then he will be successful (i.e. he will be granted Paradise)."
"Is there any more fasting?" Allah's Apostle replied, "No, but if you want to observe the Nawafil fasts (you can)."
Why didn't he say yes you may do Batini fast or Haqiqati fast or Marafati fast?
And finally let me quote hadith from book of faith, Bukhari
Hadith no: 25
Narrated / Authority of: Ibn Umar
Allah's Messenger said: "I have been ordered (by Allah) to fight against the people until they testify that none has the right to be worshipped but Allah and that Muhammad is Messenger of Allah, and perform as-salat [perform as-salat (prayers)] and give zakat (obligatory charity) so if they perform all that, then they save their lives and properties from me except for Islamic laws, and their reckoning (accounts) will be with (done by) Allah."
Salam brothers