Shampoo use post HT

Hi I am 5 weeks post op my second hair transplant and starting 4 weeks I have been using toppik.

My doctor has advised for all the right reasons to wash out toppik with shampoo every night and I have been using baby shampoo to do so.

Anyhow the question is do you think it's excessive to shampoo toppik out every night? or is water alone sufficient as far toppik is concerned?

Just wanted to make sure I wasn't over shampooing and somehow adversely affecting anything. Any input would be appreciated and sorry for if the question is silly lol