How to close a warm lead?

Hey all. I FINALLY got my first warm lead for my SEO agency through my SEO efforts for my company. The client emailed me asking if i can help his website rank better for seo and aeo an wanted a quote. I emailed him back with information on where his site is lacking and what we would do for him with a quote. No response followed up today and he responded "Hello

Thank you for your information regarding my website. I am still reviewing everything and will probably do something by the end of the month."

Im new to the sales aspect, how do i respond to this? Do i say ill follow up in two weeks? Do I call him right now? Later in the month? Thanks