Unable to go from on page to another using scrapy

I am working on a project for which I have to scrape a website "http://app.bmiet.net/student/login" after logging into it. I have successfully loged into the website however, after logging in I reach the dashboard i.e. http://app.bmiet.net/student/dashboard. I have to scrape data from http://app.bmiet.net/student/attendance. I am not sure how to go from the dashboard to the attendance link and thats what I need help for. I am still learning to use scrapy and so I am not sure if this can be done or not. Please Help me with my code and do tell me what my mistake was. The code is given below.

import scrapy
from scrapy.http import FormRequest
from scrapy.utils.response import open_in_browser



class spidey(scrapy.Spider):
    name = 'spidyy'
    start_urls = [
        'http://app.bmiet.net/student/login'
    ]

    def parse(self, response):
        token = response.css('form input::attr(value)').extract_first()
        return FormRequest.from_response(response, formdata={
            'csrf_token' : token,
             'username' : '//Username//',
             'password' : '//password//'
        }, callback = self.start_scrapping)

    def start_scrapping(self, response):
        open_in_browser(response)
        all = response.css('.table-hover td')
        for x in all:
            att = x.css('td:nth-child(2)::text').extract()
            sub = x.css('td~ td+ td::text').extract()
            yield {
                'Subject': sub,
                'Status': att
            }

NOTE: Removed Username and Password for obvious reasons

This is what I get when I crawl my spider.

2020-03-21 19:38:50 [scrapy.core.engine] INFO: Spider opened
2020-03-21 19:38:50 [scrapy.extensions.logstats] INFO: Crawled 0 pages (at 0 pages/min), scraped 0 items (at 0 items/min)
2020-03-21 19:38:50 [scrapy.extensions.telnet] INFO: Telnet console listening on 127.0.0.1:6023
2020-03-21 19:38:52 [scrapy.core.engine] DEBUG: Crawled (200) <GET http://app.bmiet.net/robots.txt> (referer: None)
2020-03-21 19:38:52 [scrapy.core.engine] DEBUG: Crawled (200) <GET http://app.bmiet.net/student/login> (referer: None)
2020-03-21 19:38:53 [scrapy.downloadermiddlewares.redirect] DEBUG: Redirecting (302) to <GET http://app.bmiet.net/student/dashboard> from <POST http://app.bmiet.net/student/stud
ent-login>
2020-03-21 19:38:54 [scrapy.core.engine] DEBUG: Crawled (200) <GET http://app.bmiet.net/student/dashboard> (referer: http://app.bmiet.net/student/login)
2020-03-21 19:38:55 [scrapy.core.engine] INFO: Closing spider (finished)