thanks for your question!
It is possible, but you would have to sacrifice one Midi CC track (alpha/beta) for that.
Set it to Program Change in the Global menu and then just send the Program Number from Step 1 of each pattern.
If you want to tweak your synth sound in between, you could try turning off the program change temporarily. You have two options for this, turning it off in the pattern-step (this will then be restored upon (re)loading a pattern), or temporarily switch the Midi Control alpha/beta in the global menu to off.