1 Hour Once a Week Most Inefficient Way to Learn
I agree. That leads to the three steps forward, two steps back progress that vastly extends time to qualification, and trebles the cost.
I went solo on the C150 at about 10 hours because I dedicated a week of summer evenings straight from work to be at the airfield. I did six of those ten hours that week (the wx was co-operative) sometimes taking advantage of 'no show' students to fill their vacant slot if that was appropriate for me, soloing in the last session. That simply would not have been possible at 1 hour a week.
You say you have the money available so paying for a series of lessons close together won't be a problem, and it will be
much cheaper in the long run.
Pre-solo is probably a time (I certainly found it so) where lessons close together work well. Later in the course it probably isn't as important. But never leave it too long between lessons, and book more than you need as you'll loose quite a few due unsuitable wx.