salam wakas,
Hope all is well
I do agree ramadan is not part of the forbidden months because of the fasting during hajj and intercourse law (for me ramadan is during heliacal rising of sirius star/dog days of summer based on my understanding of surah 53), and that the forbidden months are indeed consecutive
However, I think the hajj starts on the first forbidden month cause i think we are told on the day of the greater pilgrimage is when the revocation is made and follows it the 4 months
Based on surah 106, i think the forbidden months are in spring - the quraysh are away from the kaaba for their trip during the rainy season and summer season.. as such they cannot be doing hajj during the rainy season and summer season them being away from kaaba
Also, 9:81, they are fighting during summer, as the disbelievers say to not mobilize in the heat - given forbidden months fighting is not allowed, summer cannot be a forbidden month as they are fighitng during summer
Thanks,
tutti frutti