Flying every other day, as you seem to plan, is ideal.
I learned that way at 18. The day off was a chance to let the previous sortie sink in, yet still retain some currency and “feel” for what you just did. I finished my Private in three months, and about 43 hours.
Many decades later, as a USAF IP, I saw that same principle worked with military students, as well.
Typically, if an adult starts flying lessons, work and family obligations mean they are lucky to fly once a week. The gaps are too long; they forget much of what they learned, and it can take 70 or more hours to make it to PPL.
Confidence will come with exposure. Dedication and determination (which drives frequency of training, as well as attention to academic study) is often a key factor in determining the training outcome, in my experience.
Good luck, and have fun....that’s why most of us started flying!
