First the Imām al-Bukhārī. is a great choice indeed.
Second thing .

"The last two requirements are probably the hardest for a poor or sick person but if your faith is strong I believe you may find the needed strength. "

The Islam gave the permission to the sick not to observe fast during the month Of Ramadan.
And do these days when he get will or give food to 60 poor person for each day He could not observe fast during.
And about visiting maka is for whom who could not for poor people that what The hadith really meant.