Like others have said, even if the coach is not available this summer it still makes sense to visit and officially tour the school (if feasible for you). If you child still likes/loves the school after spending time with admissions and a tour, it is a great reason for a follow up email to the coach to let them know about the visit and keep in touch.
My daughter was recruited for a different sport and her #1 school and where she ended up no longer met for any unofficial visits. She unofficially visited 7 other programs the late winter of her junior year right before everything shut down due to Covid (plus had a few officials - all over Zoom due to Covid the next Fall - an entirely different process).
All unofficial visits she met with the coach and team plus toured. At the one that no longer did unofficial visits, she toured the school and snuck a peek at the facility for her sport. and it still remained her #1 choice. She let the coach know and he was well aware she had visited a bunch of schools and by mid-summer had passed pre-reads for all.
For the unofficial visits, she had already supplied the coach with test score, high school profile and transcript that covered through 1st semester junior year prior to the coach agreeing to an unofficial.
Long after the fact, we had conversations with the coach and while he really wants kids that have the talent - He also wants kids that want to be at the school and see it as the right fit too.
It can be a long ride with bumps along the way - so hold on 