I need help with my offensive strategy. I can destroy bases 75% of my lvl with 1 maybe 2 warps but i cant destroy bases my lvl or higher with 2 warps because after 2 warps it goes into damage protection. My tech lab is currently lvl 6 and all the units are lvl 2-6 atleast. I need tips for destroying higher leveled bases.

My first warp 6 Rhinos
3 Hornets
1 Pulse Tank
5 specters


My second warp gate if needed 2 Terraknors
3 Specters