Can neuroplasticity period reinforce negative thoughts?

Have had 2 IM sessions so far and am doing 2 more next week. I haven’t noticed a change in the depression really but I don’t expect a difference until all the sessions are complete. However I know there is a neuroplasticity period after each session. I don’t know much about neuroplasticity but since I’m still suffering and have a plethora of negative and unhelpful thoughts, during this neuroplasticity period would those just be reinforced or can it just not make it worse? Like the worst it can do is not change it and the best is changing it to something positive and better.