As salamu alaykum wa rahmatullahi wa barakatuh dear Ustadh. If during my morning or evening adhkar my mind drifts away, am I allowed to repeat that part when I regain my focus or shall I just move on with the intention of staying more focused for the remainder of it and for next time?

Ustadh AbdulAziz al-Haqqan

I do not want u to fall into a cycle of repeating and this could open a door to ocd so, just say the athkar and do not repeat them.