Lordosis and reverse spinal curve

Hi there, i’m a personal trainer and a chiropractor came to my gym giving free examinations. I got myself checked and he told me to come down to his practice because he wanted to see some x-rays etc. I went down, got the x-rays and they show a reverse neck curve and lordosis in my lower back. He wanted to set me up with a standard plan of 3 visits a week for 4 months, then 2 visits a week for 3 months, then 1 visit a week for the rest of the year. The problem I had with this is that he wanted me to sign a sheet to lock me in for the year and the plan seemed standardized for every person who came in. How can every person need the exact same plan and how can he know that it was going to take exactly that long. he also wanted to lock me in to a $2,500 price. I am worried because I know what a healthy spine should look like but I don’t think his method seems ethical. I went to another chiropractor and he told me a may need 5 or 6 adjustments but did not seem worried about the shape of my spine or even about fixing my posture. He just said come in and if you have no pain after u need no more adjustments. The problem I have with this is that I think my spine needs correction but it needs to be suited to me. I’ve heard lots of different opinions such as the muscles form to support the spine in whatever position in gets put in. the other opinion is that without correction my nervous system will not function properly.Can you please help me I am really quite unsure of what to do. I think I may see and osteopath because I have heard much better more tailered plans from people who have been to them. What is your opnion?