Side windows are not difficult to replace.
Remove screws, mark / number retaining clips if you have them, break old sealant and remove windows. Clean up old sealant, pre fit new windows, match drill holes with a high quality drill bit for plastics / acrylic's, cleco in place after each holes is match drilled, mask off exterior very close to window skin edge, apply sealant ( I used fuel tank sealant ) to surrounding interior frame, set windows in place, install clips if you have them and screws.
lightly snug screws then final torque.
Labor times will vary depending on skill level, my side windows took about 20 hours with clean up. I would buy the best bits since there are many holes to match drill, don’t want to crack one.