Changing outdoor soil

newbie here

so i had to move my seedlings(2 inches) into the outdoor soil(into the ground) from the pellets(i put the whole pellet in)
but.......the soil is kind of too clayish(but i think its good soil, mostly because its in a forest where ALOT of vegetation grows very well from grass to trees)

SO my question is:
Is it possible to change the soil? i want to take some potting soil, perlite,and vermaculite, and take the plants and mix them in with the natural soil and replant them.
Can i do this without harming the plants, i only planted them into the ground bout 2 days ago

you should be fine but be very careful the roots wont grow mor than an inch. if at all the worst thing that could happen is the plant will take longer to grow but only due to stress.. should be fine tho...

thank you