Constraints on the parameters λ and β, based on two constraining methods, using different types of observational data and for four different EoSs. Results from the orbital decay for both J0348+0432 and J2222−0137 are presented for all four EoSs. The EdGB theory with coupling Eq. (12) is considered. In addition, the orange line marks the constraints coming from the existence of minimum mass black hole. Top: wide β range plot. Bottom: zoom-in of the constraints for small values of β.