Continued training for next Century

doing my second century ride in 4 weeks how should I train, i am taking 5 days off and starting again on Sat with a 45- 50. I modified a 8 week program that was on Garmin Connect to do it in 6 weeks for my first Century. There was only one set of intervals on one day. The rest was just doing time on the bike.

I have been riding 4 days a week. Last big week was two 30 milers during week, long ride 60-70 on Sat and recovery ride 20 on Sunday.

Thoughts