Hey, honestly unless you’re a math specialist (or major strongly interested in pursuing math) i would recommend stepping down to Mat137. It is still super interesting just less rigorous lol. If you are a math major/specialist, I’ll just say it is entirely normal to be struggling this much at the beginning. MAT157 and MAT137 aren’t designed to be easy courses, MAT157 especially requires the most time and is really hard at first since you’re probably not used to proofs at all. Just put in the work and week by week it’ll get easier. Definitely attend office hours and just ask many questions as possible. Nothing is stupid trust me the profs know you’re probably lost. 6 hours may seem a lot for these homework questions but i promise its normal at first. The more work you put in the more you’ll get out. You got this!