Would half a spray of tuth be ok with cttm2 and IS?

Yes, IG can be attracting. It does not have androsteNone like Ammo and TUTH. It has androsteRone. If Ammo is not working well for you then an androsteRone product like A314, IG or SoE might be a worthwhile thing to try. It may make you seem more mature. You probably want to do some reading on the difference between androsteNone and androsteRone.

Do you know your blood type? O blood types are believed to create high levels of androsteNone naturally, so adding more could do more harm than good.