Why start yet another thread on the same subject? this is all getting very confusing.
Three frames of stores is not 'low on stores' by the way. I think you need to start weeding out some of your replies - especially those who believe that colonies should be fed and apiguard put on at the summer solstice.
You have Apiguard on, plenty of time for it to be effective, there is still forage out there, just because they are not filling supers, doen't mean they are not bringing any food in and starving.
If they are on the verge of starving then a quick feed of 1:1 syrup will do no harm and will not have an adverse effect on the Apiguard treatment.
And to be honest, MAQS brings with it another raft of issues.
Chill out a little and leave the apiguard take it's course