When/If to add in Accessory Lifts?

yecatsml

I am just about done with week 3 of Stronglifts and love it. I had my first stall last night on OHP. Did 5/5/5/4/2. Those last 2 were a total struggle. I know this is the lift that people seem to progress the most slowly on, and shoulders have always been my weak area.

Would anyone suggest adding accessory lifts to help? I'm new to this, but would something like upright row or lateral raises on the same day (alternate day?) help? I only did a 2.5 lb increase this week instead of 5. All my other lifts I have been going up the prescribed 5 (or 10 for DL) and have been OK so far.

I was just going to use the same weight next week for OHP and see what happened, but wanted to ask about accessory lifts and if there were specific ones anyone more knowledgeable than me would suggest.