My arms are still sore, but less and I feel like my form has gotten better. I did not have much time today to do push-ups as my schedule today was quite full. I went on a cruise sightseeing tour this morning at 10am and had lessons in the afternoon until 5pm. I was studying in the library until 730. Usually, I would prefer doing 2 sets in the morning and 3 sets after I go home, which is usually in the evening. Because of the tour, I only did it once before I went on the tour. But at the end of the day, I completed the challenge, and I hope I can keep going on.
I might try to do the knee pushups again tomorrow. Here is the link to my pushup journey: