I think it’s a little early to check trichs. Based solely on the amount of white pistils I see. I think you’re still in for some nice bud fattening as well. Looking great!
Too many white pistils still. Wait for nearly all of them to turn brown and recede back into the calyx’s. Then start checking trichomes. Looks to me maybe 2-3 weeks.
Looking nice. I’d say 2 or 3 weeks also. Usually the pistils all change colors to bro we n orange colors and recede back into the calyx a bit. If it is 10 weeks from soil break u def have a couple few weeks left but for the first grow u did great as they look fantastic