Fr Z has some timely reminders about going to Holy Communion and our attendance at Mass. Here are some of them.
Second, if you know you cannot go to Holy Communion that does not mean you are excused from going to Mass. You still have the obligation to attend Mass on Sundays and days of obligation even if you can’t receive. That’s why they are called days of obligation. It is your attendance that is obligatory, not Communion.
Third, observe the Eucharistic Fast, which is one hour before Communion not one hour before the beginning of Mass. If you want to fast longer, fine. One hour is the law, unless you are sick, etc. etc. Remember, to receive Communion we have to be disposed in our souls (by being in the state of grace) and in our bodies (by observation of the fast which pertains to our state in life).
The full post can be read here://wdtprs.com/blog/