Keeping track of a button status inside a thread (PyQt5) - multithreading

Question

I created this simple GUI that displays a conuter on a text box. I am using workers and threads (this is just a simplified program I have other threads). I want to be able to check the status of the push button inside the label update thread. for example if the user clicked, then the counter will increment by 5 instead of 1 (for this iteration only), basically I want to keep an eye on this button's status all the time.
here is my code for the counter, how do I add the button check functionality to it?
Edit: I've updated the code using signals and slots to print 'hi' as a start, yet I do not get any output when I run it.
from PyQt5 import QtCore, QtGui, QtWidgets
from PyQt5.QtCore import QPoint, QRect, QSize, Qt
from PyQt5.QtGui import *
from PyQt5.QtWidgets import *
from PyQt5.QtCore import *
import sys
import os
import cv2
import numpy as np
import time
############################# Telemtry widgets update ##########################
class DISPLAY(QObject):
acc1_val = pyqtSignal(int)
finished = pyqtSignal()
def run(self):
global cntr
cntr = 0
self.inst = Ui_MainWindow()
self.inst.flag.connect(self.update)
print('connected')
while 1:
cntr = cntr +1
time.sleep(1)
self.acc1_val.emit(cntr)
if(cntr > 50):
cntr = 0
self.finished.emit()
#pyqtSlot()
def update(self,flag):
print('hi')
print(flag)
############################ GUI #######################################
class Ui_MainWindow(QObject):
flag = pyqtSignal(int)
def setupUi(self, MainWindow):
MainWindow.setObjectName("MainWindow")
MainWindow.resize(500, 500)
MainWindow.setFocusPolicy(QtCore.Qt.NoFocus)
self.centralwidget = QtWidgets.QWidget(MainWindow)
self.centralwidget.setObjectName("centralwidget")
self.Title = QtWidgets.QLabel(self.centralwidget)
self.Title.setGeometry(QtCore.QRect(30, 10, 421, 71))
font = QtGui.QFont()
font.setPointSize(24)
font.setBold(True)
font.setWeight(75)
self.Title.setFont(font)
self.Title.setObjectName("Title")
self.ACC1_X = QtWidgets.QLineEdit(self.centralwidget)
self.ACC1_X.setGeometry(QtCore.QRect(300, 300, 41, 31))
self.ACC1_X.setObjectName("ACC1_X")
self.btn = QtWidgets.QPushButton(self.centralwidget)
self.btn.setGeometry(QtCore.QRect(100, 100, 101, 41))
font = QtGui.QFont()
font.setPointSize(13)
self.btn.setFont(font)
self.btn.setObjectName("Release_btn")
self.btn.clicked.connect(self.release_callback)
MainWindow.setCentralWidget(self.centralwidget)
self.menubar = QtWidgets.QMenuBar(MainWindow)
self.menubar.setGeometry(QtCore.QRect(0, 0, 1920, 22))
self.menubar.setObjectName("menubar")
MainWindow.setMenuBar(self.menubar)
self.retranslateUi(MainWindow)
QtCore.QMetaObject.connectSlotsByName(MainWindow)
###################### Display thread ######################
self.thread1 = QThread()
self.worker1 = DISPLAY()
self.worker1.moveToThread(self.thread1)
self.thread1.started.connect(self.worker1.run)
self.worker1.acc1_val.connect(self.Label_update)
self.thread1.finished.connect(self.worker1.deleteLater)
self.thread1.start()
def release_callback(self,flag):
self.x = 1
print(flag)
self.flag.emit(True)
def Label_update(self,acc_val):
self.ACC1_X.setText(str(acc_val))
#print(str(acc_val))
def retranslateUi(self, MainWindow):
_translate = QtCore.QCoreApplication.translate
MainWindow.setWindowTitle(_translate("MainWindow", "MainWindow"))
self.btn.setText(_translate("MainWindow", "click me"))
self.Title.setText(_translate("MainWindow", "TEST"))
if __name__ == "__main__":
import sys
app = QtWidgets.QApplication(sys.argv)
MainWindow = QtWidgets.QMainWindow()
ui = Ui_MainWindow()
ui.setupUi(MainWindow)
MainWindow.show()
sys.exit(app.exec_())